Penny Pincher

Penny Pincher is an achievement in Halo Wars that is unlocked when the player gets a winning high score with 10 or less squads against the Heroic AI.

Methods
1. Enter a 2x2 Multiplayer game with a friend on the same team. Set the other team with two AIs on Heroic or Legendary; it doesn't matter which. When the game starts, have your friend escape to the Xbox Dashboard. The game will automatically end, declaring you the winner and unlocking the achievement.

2. Enter a 1v1 skirmish game against the AI on Heroic. The best settings here are you as Captain Cutter and the AI as Forge on the Blood Gulch map. If you have any or all of the skulls to make your units stronger, activate them at the start. Immediately build an airpad and four turrets. The other spaces you can leave empty. Once the airpad is built, build two Vultures.

While waiting, start attacking the little base above you with the warthog. When the first vulture arrives go finish off the base; then build your own setting it up the same as your first. Produce two more vultures from your main base. Now move to the base next to the AI. If you're on time, the base there will be empty and just seconds from being able to build a base. Claim it knowing it will likely be destroyed, and rebuilding it till it is finally done. Attack any anti air units in the area with barrage (Y button) and clear it out with the two-four vultures you've built. Also, be sure to use the healing leader ability. Finally, build the remaining vultures between the first two bases. Do not hesitate or wait, and start attacking the enemy base now. Use the MAC Blast on the base, and Barrage as much as possible. If done right, you will have won in less than 10 minutes, which will give you the Big Al's Scooter achievement as a bonus to the strategy.

3. Enter a 1v1 death match, you as Cutter and opponent as Forge. Send your first warthog to the back of the opponents base and repeatedly spawn them and attack with the Warthogs (only spawn 9). He will try to build a barracks and a vehicle depot, but just destroy them as soon as they come up.

4. Enter a 1v1 death match as the Prophet and the opponent as any leader on Blood Gulch. At the start of the match, quickly create a Temple and send your Ghost towards the enemy base as a distraction. Once the Temple is created and Regret is on the field, send him towards the enemy base and use his cleansing beam to destroy the enemy base and/or any enemy units that pose a threat to him. If done efficiently, you should be rewarded with the 'Big Al's Scooter' achievement as well.