Kill 25 monsters with a chainsaw

Kill special enemies: Grenadier, Thug, Wrestler, Infected, Suicider, Screamer, Butcher, Floater.

Reach Henderson

Successfully defend the tunnel entrance

Kill 100 monsters with a kick

Find a boat for use in the jungle

Escape from the ship

Find 60 collectibles.

Breach a locked door with the first blow.

Reach level 25.

Kill 250 zombies using blunt melee weapons.

Complete act 1.

Complete 25 quests while playing with at least one co-op partner.