Go trunk diving and spend at least $25,000 on Crazy Dave's Twiddydinkies

Defeat your first Gargantuar

Plant your first 10 peashooters

As the primary player, kill an opponent while at critical health, with your leg and arm injured.

Kill a Brute without taking damage

Dismember 2,500 Necromorph Limbs (single player only)

Kill 30 Necromorphs with Kinesis objects

Escape the Facility

Survive the Eye Poke Machine

Kill 20 enemies with Detonator Mines in a deployed state

Collect 100 logs

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

Kill 50 Necromorphs while they are in Stasis (single player only)