Complete the Tutorial mission.

Retrieve the ancient mask

Escape from the Research Lab

Find the Youngbloods in the Jungle

Finish a Ranked Infestation match as the only remaining prey

Kill the Tormenter

Stomp 10 Containers

Dismember the Lightspeed Boy Statue

Impale an enemy and make him fly through the air for 17 meters - it must stick to the surface

Dismember 25 Necromorph Limbs (single player only)

Face to Face - Give Kramer his medicine

Trapped - Save Lauren underwater

Eureka - Prepare a good omelette on time