Have 10 zombies with masks on at once

Kill 500 zombies

The player has successfully invented at least one item

The player has defeated Peach Wilkins

The player has fully researched the Leadhead Splicer

The player has taken a Research Photo of the highest grade

Found all collectable Roses in “A Shocking Turn of Events”

Rescued the Little Sister in “A Shocking Turn of Events”

Complete all test chambers in the Excursion Funnels co-op course

Create a combo weapon

Rescued the Little Sister in “The ‘I’ in Team” without destroying any Machine Gun Turrets

Rescued the Little Sister in “The ‘I’ in Team” in under 3:00