The Killing Spree medal resembles a silver and blue bulls-eye target sitting on top of a four pointed silver star; it is awarded to individuals after killing 5 opponents in a row without dying on multiplayer matchmaking, or after killing 10 opponents in a row without dying on firefight or campaign.
- The easiest playlist to earn the Killing Spree medal is Living Dead as all the opponents wield energy swords requiring them to come close to the player to infect. This allows players to either kill the zombies from a distance using a pistol, or kill the zombies with ease using the shotgun.
- Another playlist which displays relative ease to earn the Killing Spree medal is SWAT. This is due to players having no shields, and only requiring one head shot to be killed. So long as the individual has a keen enough accuracy, and the ability to strafe and dodge incoming fire, gaining five kills without dying shouldn't be too difficult.
- It has been proven that the highest spree possible is 255 kills. Even if you get more kills after that number, without dying, it will still say that your highest spree was 255 kills. This is most likely because 255 is the maximum value representable by an eight-digit binary number, and therefore the maximum representable by an unsigned 8-bit byte.