The Library/Walkthrough

[Mission Overview] Fight your way through an ancient security facility in search of the index. [Introduction] Relieved to be out of the swamp? Save that relief for later; you'll need to keep your head on straight for this mission. The Library is a bit long and quite repetitive. The level itself is semi-linear, but the primary problem is the Flood. You will continually fight hordes of them through large hallways, which slows down progress through the level dramatically. The key thing to remember while reading my guide to level 7: Easier said than done. While I can offer great tips on how to kill the Flood in each area, it is ultimately up to you to wield your Flood killing skills. Here is one tip for the entire level, however: Do not try to keep up with the Monitor. Instead, stay back and clear an area of the Flood before trying to catch up with the Monitor. Enemy management is what I like to call it. As the level starts, the Monitor will tell you that the "index" must be found and taken to the control room and asks that you follow it. ___________                               -=[The Library]=- ¯¯¯¯¯¯¯¯¯¯¯ >>Follow the Monitor to the index (NOTE: The Monitor emits a blue luminosity that can be seen from far away, so keeping up with it should be no problem.) You start out with an Assault Rifle and Handgun, but there are plenty of weapons to be picked up throughout the level. For now, the Assault Rifle will suffice. Proceed to follow the Monitor, and a few of the small Flood will come out to attack you. Take them out, and move closer to the Monitor who is waiting for you. When you do, turn around becaue tons of the Flood will pour out from behind you as well as from your sides. Try to take out the Flood with giant heads from far back because their death results in an explosive situation. After taking out the Flood, turn back around and make your way toward the Monitor. Again, before you can reach the Monitor, the Flood will come at you. This time from the left and right. I'd backtrack toward the beginning of the level so that the concentration of the Flood is in front of you. Then make your way forward as you clear out the Flood. Ahead, on the right, the Monitor will be hovering over the entrance to a large room. The Monitor should say "We are near the index chamer, follow me." Don't enter yet, however, as there are quite a few dangerous Flood pouring out of a pipe to the left. These larger members of the Flood are carrying weapons, which make them extra lethal. The good news, however, is that you can take their weapons after killing them. Just be sure to keep the Flood in front of you at all times. You might also have to run backwards while firing in order to dodge some of the lunge attacks. Before going through the door that the Monitor was hovering over, be sure you pick up a Shotgun off of one of the dead bodies. When you are ready, enter the doorway and go through the short hall to the large index room. As you follow the it into the large room, the Monitor will mention the index above. Don't venture far into the large room, however, as the Flood will enter in from all sides. A good tactic is to walk back a litle way into the tunnel you used to get to the large room. This will force the Flood into a small area, allowing you to concentrate your shots. You might have to run back into the index room to lure additional Flood out of hiding. After taking out that batch of the Flood, the Monitor is waiting for you to the left side of the index room. Make your way over to the Monitor and pass through the corridor below it. Before you can reach the other side of the small corridor, the Flood will come at you from the other side. In this area beyond the corridor, just outside of the index room, the Flood will continue to come out of a large pipe in the wall for quite some time. The corridor itself seems like a fairly safe area to shoot from. After taking out all of the Flood, enter the area the Flood were just coming from and follow the path to the right. Before you can even take a few steps, the Flood are already pouring out of pipes up ahead. These Flood have more lethal weapons such as the Shotgun and Needler. Try to take them out first. Keeping the Flood in front of you is a must. Also, never be affraid to run backwards to save your life. When no more red dots appear on the Motion Tracker, proceed around the pathway. On the left side of the path, you should see the Monitor hovering next to a giant door. Approach the door and the Monitor will say, "The security doors have sealed automatically. I will go access the override to open them." After waiting for a few seconds, the Monitor returns and says, "Please follow closely. This portal is the first of ten." Joy! So, put on a smile and go through the large doors. The Monitor is waiting, and wants to take the path on the right. However, if you take the path on the left, you can save a bit of trouble later on. If you go left, the Monitor will say, "This is not the correct direction. If you do not follow me you may become lost." Ignore the Monitor and continue in the "wrong" direction. You will reach a dead end, but tons of the Flood will emerge. Fortunately, these are the small Flood and are quite easy to take out with an Assault Rifle. Taking them out now will prevent them from sneaking up from behind if you would have gone the "correct" way first. After taking the Flood out, turn around and go in the correct direction. The Monitor is waiting for you, so follow it down the large hall. As soon as the Monitor mentions your "ineffective weapons", the Flood will appear ahead. Take out the first wave and advance. Then, as you reach a section of the path with three glass panels in the floor, more of the Flood will appear. This time you will be surrounded by them, so try to find an area where you can regain control of the situation by putting the Flood in front of you. During your hardships, the Monitor conveniently says, "The Flood must not escape the installation: they consume all." Work your way back toward the three glass panels and take out all of the Flood. As you go past the glass panels, you will see the monitor waiting at the end of the path. When you approach the Monitor, the Flood will jump out of the pipes in the wall in front of you. Backtrack a little to give yourself some room to take out the Flood. Just be careful not to fall through the area where the three glass panels were behind you. While a Shotgun does work wonders on the Flood, the Covenant's weapons seem to be quite useful on the large Flood members. After a few waves of the Flood, follow the Monitor around to the left at the end of the pathway. The Monitor mentions "genetic infection" and how the bodies "transform". No time to care right now, because as you follow the Monitor around the corner to the left, more of the Flood jump out. After taking the Flood out, continue following the Monitor down the large hall. Again, the Monitor mentions the Flood and says they need a "host". Interesting. As you are following the Monitor, it will fly into one of those pipes ahead. You obviously can't follow that, but the Flood come out anyway. After taking the Flood out, follow the hall around to the right. The Monitor is out of site, but there are more Flood that appear anyway. Before advancing down the hallway too far, be sure to pick up the Over Shield at the bottom of the small ramp in the middle of the path. As you continue down the large hall, you will meet back up with the Monitor who will then say, "We must continue. This way please." However, the Flood come from your left and right so you must deal with them. Backtrack some so that you can keep the Flood in front of your position. After taking the Flood out, follow the Monitor down the hall a little bit more. The Monitor will compliment the facility and suggests that you can see more of it later. Yeah right. Like usual, more Flood will appear. Again, you will be surrounded, so find a good spot to protect your back. After dealing with the first batch of the Flood, continue down the hall. You should see three glass panels in the floor again, just be sure not to fall through them. When you approach the area beyond the three glass panels, more of the Flood will come from the hall in front of you. This group of the Flood will be concentrated in front of you already, so just hold your ground. After dealing with them, pass over the three glass panels and follow the hall around to the right. At the next corner, as the hall turns right, additional Flood will appear in front of you. After taking the Flood out, continue around the corner to the left. Up ahead, the path will widen and quite a few Flood will appear. Then, the Monitor introduces you to a group of Sentenals! These Sentenals are like the robots you may have seen at the end of level 6. They use precision lasers to take out the Flood. Advance forward and watch them work their magic. Letting them do the work saves ammo too. However, if you notice that any of the Sentenals are taking damage, protect them. Actually, you may wish to fight at the same time the Sentenals fight just to make things go even quicker. You should be careful not to get in the way of the precision lasers as they will damage you! After most of the Flood in the immediate area have been eliminated, the Monitor mentions something about a disruption of the power flow. The Monitor then leaves, so continue forward down the hall and take out any remaining Flood. Near the end of the hall, there is an opening on the left. This leads to a circular room that acts as an elevator. Enter the room and stand in the center of the elevator. The Sentenals will not follow you, but you will now be able to go up one level. ___________________                           -=[Wait, it Gets Worse]=- ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ The bad part is that it does get worse. When the elevator comes to a stop, exit through the door and you will see the Monitor to the left. Before following it down the hall to the left, however, some Flood pour out from the right. A good tactic is to run back into the elevator room and allow the Flood to enter through the skinny doorway. Taking them out in a concentrated area will be much easier. When the Flood have been eliminated, follow the hallway to the left. As you make your way down the hall, more Sentinals will appear from the left. Proceed forward and make a left near the end of the large hall to find the Monitor. The Monitor mentions some type of failure in a drone control sub-system due to the Flood. The Monitor goes to fix it and says it will be right back, but for now you must stay here and fight off the Flood that appear. As the Monitor leaves, advance down the hallway. There are two First Aid kits at the bottom of the small ramp in the middle of the path. As you continue down the hallway, a few more groups of the Flood will appear; however, you should not have to work really hard with the presence of the Sentenals. After taking out the Flood, continue forward and follow the hall around to the right. Around the corner is a large door, but it is locked for the moment. That is the door the Monitor went to unlock. >>Hold your position until the Monitor returns As you reach the corner, the Flood will come in from quite a few directions. You have the Sentenals to back you up, but you still need to find a secure place to fight. Also, try to keep the Sentenals out of danger. If you back up against the locked door and secure your front side, you should be ok. After most of the Flood have been destroyed, the Monitor will return and open the large, locked door. Time for more following. >>Follow the Monitor to the index As the door opens, pass through it. More Flood will appear up ahead as well as behind you in the previous hallway. The Sentenals will be fighting some of the Flood ahead, and the Monitor is around to the right. This is actually the index room, only now you are one level higher than you were last time you were in it. Make your way around to the right, in a counter-clockwise direction. The Monitor is hovering over to the right and will say, "The Sentenals can use their weapons to manage the Flood only for a short time. Speed is of the essence". With that said, the Flood will come at you from the direction the Monitor is heading. With the help of the Sentenals and a nice Shotgun, take out the Flood. Continue around in a counter-clockwise direction after the Flood have been taken out. You will soon reach the Monitor again. Up ahead, on the right, there is another large door. Before you make it to the door, however, a group of the Flood attack you from the front. Be extremely careful here, because one of the Flood members has a Rocket Launcher! After finishing off the Flood, approach the large door and the Monitor will proceed to open it. The door, however, gets stuck during the process and the Monitor leaves to fix the problem. >>Hold your position until the Monitor returns As the Monitor leaves, turn around so that your back is facing the partially opened door. The Flood will come at you from the right side of the path, and a few Flood will gather behind you, on the other side of the door. Take out the Flood and when the Monitor comes back, face the door and prepare for the Flood on the other side. >>Follow the Monitor to the index Continue through the large door and follow the Monitor. This hallway segament is similar to one in a previous section of the level. The Monitor takes the right path, but if you go to the left you can go ahead and take out some Flood. Taking them out now will make things easier in the near future. After you have taken them out, return and follow the correct path, where the Monitor went. Up ahead, the Flood will start coming at you. Some of the Flood will actually come from an underground tunnel, which is located at the bottom of the ramp that is in the middle of the hall. There is a side-alley on the right with a First Aid kit behind a pillar. After taking out the Flood, since the hallway is a dead end, you will have to follow the ramp in the middle of the floor down to the tunnel below. Follow the tunnel and, as you turn the corner to the right, you will meet up with more Flood. Continue through the long tunnel and you will eventually reach another ramp. This ramp emerges in the middle of another hallway. On your way up, some Flood will drop down to surprise you. Take them out, and head up to the hall above. You will hear the Monitor humming, but there are still quite a few Flood to deal with. Position yourself so that your back is secure, and proceed to take out the Flood. After that, for the Monitor on one of the sides of the ramp you just came from. From the exit of the ramp, the Monitor is to the left. Make your way over to the Monitor and it will mention the fact that your suit will keep you well protected. As the Monitor travels down the hall on the left, the Flood will pour in from several the left and right. An easy tactic is to backtrack to the prvious hallway where you emerged from the ramp in the floor. Just be sure to give yourself plenty of room to take out the Flood. Several waves of the Flood will come out at you after each previous wave has been taken out. When no more seem to come out, proceed forward and follow the hallway around to the left where the Monitor went. Soon, however, you will encounter additional Flood. After taking them out, continue to follow the hallway around the corner. After a left corner, you will make your way around a right corner. From here, you can see the Flood waiting for you at the end of the long hall. However, one of the Flood members has a Rocket Launcher! Strafe out of the way whenever a rocket is fired and take the Flood out. When you have taken the Flood out, continue down the hallway and toward the Flood that was using a Rocket Launcher against you. At the end of the path on the left, you can find a First Aid kit and a Rocket Launcher on a dead Marine. Follow the path around to the right and continue forward. As you make your way forward, a few more Flood will jump out at you. The ramp in the middle of the path leads to nothing this time, so continue past it. You should see the Monitor again and it will say, "The installation was well conceived. It is surely the only way to end the Flood threat". After that, the Flood will come in from your front. Back up a little, and take them out. Several waves of the Flood will continue to appear, but just have patience. After taking them out, continue forward toward the Monitor, which is hovering up ahead. As you approach it, the Monitor will continue forward and around to the right. Then, more Flood will come in. Once again, backtracking is a good tactic to use since the Flood come in from quite a few directions. After eliminating the Flood, follow the hallway around to the right and proceed forward. The Monitor is waiting for you ahead on the right, so follow it as it makes its way down the hall. Before it dissappears, however, more Flood will come out of the pipes up ahead. Just keep the Flood in front of you at all times, and you should be able to use previously acquired tactics to take them out. After a huge number of Flood have been eliminated, the halls will finally be safe. Make your way forward and go through the doorway on the left. This leads to another circular room that has an elevator in it. So, when you are ready, stand in the middle of the elevator to go up one level. _____________________________________                  -=[But I Don't Want to Ride the Elevator]=- ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ When you reach the top, continue through the door and follow the hall around to the left. You will then meet back up with the Monitor and the Sentenals will make another appearance. As you continue down the hall, the Monitor makes a statment about how it believes the Covenant are responsible for releasing the Flood. You will also run into some Flood, but the Sentenals should be a great assistance. In the middle of the room, there is a ramp leading down to a tunnel. You must take this to proceed since the hallway you are in is a dead in. Before you go down the ramp, however, there is a First Aid kit just past the ramp on the right side of the hall. When you are ready, follow the ramp down to the tunnel below. Follow the tunnel and you will soon run into a group of Flood. A grenade or two will take them out quickly since the Flood are in a small area. Continue through the tunnel and you will eventuall find a ramp leading up to another hallway. As you emerge into the new hallway from the tunnel below, the Flood will come at you from the left and right. Fortunately the Sentenals are nearby. The area to the right of the hallway from where you emerge is a dead end. Like usual, keep your back protected and help the Sentenals take out the Flood. When the Flood have been taken out, make your way down the hallway and around the corner to the right. You will see the Monitor again, so follow it until it dissappears into the hole in the wall stright ahead. Not surprisingly, the Monitor has left you. Around the corner to the left is another locked door. >>Hold your position until the Monitor returns When the Monitor leaves, the music will heighten and the Flood wlil appear. The best route is to backtrack and allow the Flood to come to you. The Flood come from three directions, but if you keep them in front of you, they will be easier to destroy. After taking out the last of the Flood in the immediate area, the Monitor will open the door around the corner to the left. >>Follow the Monitor to the index Continue around the hallway and you will notice a First Aid kit in the corner on the right, just before you go through the doorway. After going through the doorway, you will be back in the index room (only one leve higher than you were the last time you were in the index room). The Monitor will fly to the left, in a clockwise direction, and mention something about a previous catestrophic disaster. Meanwhile, the Flood approach you from the left. Make your way in a clockwise direction around the room, taking out the Flood as you go. After the first batch of the Flood, the Monitor will be waiting for you. When you approach it, the Monitor speeds on in a clockwise direction. Then even more of the Flood appear. After taking out the Flood and continueing in a clockwise direction, the Monitor will be waiting for you in a doorway to the left. After passing through the large door, the Monitor tells you how the facility was built to study the Flood. Follow the Monitor around to the right. Be sure to pick up the First Aid kit on the left of the hall if you need it. Continue down the hall and head for the Monitor hovering up ahead. Before you reach the Monitor, however, some of the Flood jump out at you. The ramp in the middle of the hallway is a dead end, so jump over the hole and make your way to the Monitor. When you reach the Monitor, it will go through the hole to the right. The Flood will start coming at you: a few from the right(where the Monitor went) but most from the hallway to the left. Take the Flood out and work your way down the hallway to the left. Additional Flood will appear, but concentrating on the dangerous Flood first will make things easier. Just follow the large hallway around several corners and you will eventually meet back up with the Monitor. The ramp leading down in the middle of the hallway is a dead end, so just ignore it. Make your way to the Monitor and it will fly forward through the large set of doors ahead. These doors are only partially opened, but there is enough room to go through. Continue through the door and you will see the Monitor up ahead at another set of doors. This set of doors is locked. As you make your way to the Monitor, you can find a First Aid kit to the right, just behind a wall in the middle of the room. Now approach the Monitor and it will say, "I will deativate the security lock. Wait here". >>Hold your position until the Monitor returns As yo umight have guessed, the Flood will come while the Monitor is gone. You are confined in a small area this time, so try to reach a corner where you can keep your back safe. Also use a potent weapon to eliminate the Flood quickly. A weapon such as the Shotgun will do. When you are almost finished with the Flood, the Monitor will open the door that you were trying to get through a minute ago. The Sentenals are on the other side of the door fighting the Flood, so proceed through the doorway. >>Follow the Monitor to the index Through the doorway you should find several dead Flood as they have already confronted the Sentenals. After all of the Flood are dead, continue through the hallway and around the corner to the right. The Monitor says to stay close because time is short. As you make your way down the long hallway, some of the Flood will appear. The Sentenals should make this fight go quickly, however. Continue around the corner to the left and follow the hallway until you confront a large number of the Flood. The Flood will continue to attack for quite a while, but the presence of the Sentenals should save on ammo. You should, however, take an active-offensive role to speed up the the process. After taking out the rest of the Flood, go through the small doorway on the left near the end of the hall. You are in the last of the "elevator rooms"... rejoice! So, when you are ready, get on the elevator and walk to the middle to go up to the final level of the Library. _______________________________________________             -=[Fourth Floor: Tools, Guns, Keys to Super Weapon]=- ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ When you reach the fourth and final floor, exit the elevator room. For once, the Sentenals follow you up the elevator. As you leave the elevator room, there is a First Aid kit in front of the exit in the new hall. There are already quite a few Flood to the left and right, and the Sentenals should be taking care of business right away. Make your way to the right and down the hall. You will meet constant Flood resistance along the way, so take a few minutes to help the Sentenals eliminate the Flood. As you reach the next corner, several waves of the Flood will appear. These Flood are particularly difficult as most of them have good weapons. Backtrack a few steps into the previous hall and defend your ground. Try to protect the Sentenals however; they might take quite a bit of damage from the Flood who carry Shotguns. After taking out the Flood, continue through the hall and you will eventually come to a a ramp in the middle of the floor that leads down to a tunnel below. Beyond the ramp there is a large door, but it is not fully open. Therefore, you must take the ramp down to the tunnel below. As you follow the underground tunnel around to the left, you will meet quite a few Flood. Chuck a grenade to help that number drastically decrease. Continue through the tunnel and you will eventually emerge in another hallway. The door that was closed before is located to the left of the tunnel exit. To the right of the tunnel exit is a First Aid kit and the door you need to pass through as soon as the Monitor opens it. For now, a large number of the Flood will attack you. These attacks will come from all directions, including the tunnel you just emerged from. Try to isolate yourself and give yourself plenty of defensive room, then eliminate the Flood. By then, the Monitor will have opened the new door, just to the right of the tunnel exit. As you pass through the door, you should see yet another ramp in the center of the hallway. This is a dead end, so just jump over it and continue through the hall and around the corner on the left. Up ahead, at the next set of corners, the Flood will start coming in again. You can easily find a corner to shoot them from, just don't let them get too close or you are toast. After eliminating that batch, continue around the hallway and you will meet the Monitor once again. This time the Monitor mentions something about "the Flood repairing your vessel". Up ahead you will see another ramp in the middle of the floor. Again, this one is a dead end, so ignore it. As you reach it, however, the Flood will attack so backtrack a bit to gain a steady offensive position. After taking out the Flood, you can find a First Aid kit along with a Rocket Launcher behind a pillar in a side alley to the left of the ramp. When you are ready, continue through the hall and you wil soon see the Monitor hovering at a door on the left. This door leads into the index room, but as you approach, and the Monitor opens the door for you, tons of the Flood will pour out. This is probably the toughest section dealing with the Flood, primarily due to their strong weapons and smart intelligence. The door in front of you will slowly open, but quite a few Flood will continue to stream through. If you follow the hallway to the right, there is a dead end. However, this makes a good place to take out the Flood as they chase you. Use a Shotgun to swiftly take out the Flood with weapons. When your Shotgun runs out, pick up one of the weapons that the Flood dropped. Continue to fight off the Flood until no more come out of the index room. There are still quite a few Flood left, but they are waiting for you in the index room itself. If you walk into the index room, the Flood will come to you. So, go in until you see red dots appear rapidly on your Motion Tracker, and then backtrack. Continue the fight until no more Flood are on your Motion Tracker. There are still a large number of Flood left even after this, but now you can go right into the index room to take them out. As you enter, head toward the right. >>Recover the index You should see the Monitor waiting near the right side of the room. As you make your way over to that direction, however, a legion of the Flood will attack. This wave is quite lethal, so if things get too hectic in the index room, back out into the previous hallway. After what seems like an eternity of fighting, the room will finally be clear. Now head over to the Monitor hovering ahead. Now approach the large blue beam in the center of the index room. You and the Monitor lower to the ground floor and grab the index... finally! But... the Monitor takes it from you because it is against the "protocol". Bummer! You now must go back to the Control Room to use the index. Well, at least you are out of the Library.