Defeat the Alien Probe in Alien Invasion

Ride a bat for an entire level without dying

Complete a tale using only your gun

Defeat 1000 enemies

Defeat Rattlesnake Jake in The Return of Rattlesnake Jake

Launch an enemy with an uppercut then shoot him three times

Brew your first potion

Complete Rodent Clan

Lure a Jumper to land on a shotgun shell

Complete Land of Giants

Defeat 500 enemies

Defeat a huge charging rabbit using only melee attacks, without taking any damage from him

Smash open 250 crates