Knock off every Tripod during the Elevator Sequence

Kill 4 enemies with the same Ripper blade

Sever all three tentacles of a Lurker with one Line Gun Primary Fire shot (single player only)

Kill the Tormenter

Get through the first Zero-G area

Survive the Train Sequence

Use Quick Heal ten times (single player only)

Dismember 25 Necromorph Limbs (single player only)

Collect all Trophies

Complete the game on the hardest difficulty setting

Complete Chapter 12 on any difficulty setting

Collect 150 Logs