Reach Sergeant (Level 10) in multiplayer Public Match.

Earn a Double Kill with a Level 1 Super Attack

Take a dose of Zombrex.

Kill 69 zombies. [Host Only]

Complete 1 S.T.A.R. Lab Mission

Complete Classic Battle with any character

Win with Batman using every special move and his Supermove

Reach Level 10

Execute a Torture Attack.

Complete the game.

Force an enemy to drop dynamite that kills two people when exploding.

Perform 50 headshot kills in the single player campaign.

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