Board a ship without losing any crew members.

Complete memory sequence 2.

Complete training sequence.

Tag 100 enemies

The Lizard - Cut your finger using axe, knife or pliers + disinfect or cauterize the wound

Kramer's Party - Defeat Gordi's bodyguards

Complete all Rampages.

Lexington Station - Knock down at least 50 passers-by

Players simultaneously killed 2 unaware targets

Perform a x10 Co-op Combo

Kill 3 targets or more using an explosive object in any level

Destroy 50 cars