Kill 300 enemies with a Secondary Weapon.

Destroy the Prototype Stealth U-Boat hidden in Festung Guernsey.

Destroy Operation Kraken's production facility at Martressac.

Escape from the sewers.

Open all of the safes and locks in the game.

Read a letter left behind by Jill.

Shoot a zombie dog or a licker out of the air.

Destroy a Mr. Raccoon.

Increase your inventory slots.

Counterattack with a sub-weapon.

Customize a weapon.

Make it to the police station.

Pour old oil on the floor