The Brookhaven Experiment achievements

Survive the second campaign level.

Survive the first campaign level.

Kill 100 enemies.

Acquire 200 throwables in campaign mode.

Blow the head off of something large and toothy.

Survive a nighttime campaign level using only the knife.

Decapitate each enemy type at least once.

Acquire all guns and upgrades in a survival game.

Survive the final campaign level.

Survive a nighttime campaign level using only the knife.