Defeat Stage 4 G with 4+ minutes left until detonation.

Escape from the sewers.

Escape the police station.

Destroy a Mr. Raccoon.

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

Paralyze a licker's sense of hearing.

Open a dial safe.

Open a portable safe.

Combine two items together.

Counterattack with a sub-weapon.

Kill 50 players with a shotgun, a submachine gun, and/or a pistol.

Equip a ghillie suit for the first time.