Blast 15 enemies with a single bomb
Penetrate 12 enemies while using a single lightspear pickup
Incinerate 25 enemies while using a single flamethrower pickup
Kill 25 enemies while using a single shotgun pickup
Get on a 33 kill streak!
Get on a 15 kill streak!
Complete every stage with 100% of the chicken left!
Complete every stage with at least 75% of the chicken left!
Complete every stage with at least 50% of the chicken left!
Unlock all stages!
Finish one level in 2 players mode in campaign