You knocked out 3 or more enemies with a single fart outside of battle.

You successfully blocked every enemy attack in a single (non-tutorial) battle.

You farted on 10 enemies in the world that were knocked out.

You've farted on people 100 times.

You accepted your fate and chose the name Douchebag yourself.

Kill 500 zombies.

Struck by lightning 10 times.

Pick up 1,000 zombie medals.

Defeated Hazmat in Prologue.

Rescued all classmates in Prologue.

Purchase 50 types of items in the Kit Catalogue

Detonate 20 bombs in the opponent's court in Bomb Match

Clear the game