Big Head

 is a game mode where you have to reach the set amount of kills. However a kill streak will grow your head as a result.

Overview
This game mode is similar to One Man Army but with a growing head.

When you killed another player, your head will get bigger. Killing at least 5 players, your character head will be at max size. Once you get killed, the size of your character head will be reset/goes back to normal.