Hero Mode

Hero Mode is a special bonus for players in Zombie mode. It is activated when the player kills 5 zombies in a row with a headshot which unlocks 20 seconds of this bonus. If the chain of headshots continue while in hero mode, each headshot grants 5 seconds. If the Hero Mode timer reaches 0, the player will return to normal.

Effect
Hero mode grants the player more speed and the ability to instantly kill zombies. Bosses are an exception however. It also has an indication of a red skull on the screen and its own music.