Kill an elf

Kill a grinch

Kill 250 enemies

Kill 1000 enemies

Kill 50 enemies with waterpistol

Kill 50 enemies with paintball gun

Kill 50 enemies with tennisball gun

Kill 50 enemies with nailgun

Kill 50 enemies with flamethrower

Kill 50 enemies with fireworks stick

Kill 50 enemies with vinyl disc

Save 100 hostages

Complete 100 stages

Headbutt 50 enemies

Guitar-smack 50 enemies

Kill 5 enemies with bounced tennis ball

Kill 3 enemies with single explosion

Destroy 666 presents

Unlock a new weapon

Upgrade a weapon

Max out all main weapons

Max out all overdrive weapons

Max out all boosters

Kill 25 enemies watching TV

Electrocute 25 enemies

Blow up 25 enemies

Kill 25 naughty elves

Defeat possessed reindeer

Defeat ghost reindeer

Defeat Santa

Complete stage without getting hit

Have credit 10,000 available at once

Blow up distracted elf

Kill elf with chain reaction