Clear a stage with only headshot kills.

Clear the first mission.

Kill an undead... using the toilet.

Buy a weapon from Charon.

Clear a stage with only melee weapons.

Kill Puff without using the Tommy Gun.

Melee a Bouncer to death.

Clear 'The Bogeyman' without being seen.

Clear all Zombie Kingz missions.

Kill a vampire mid-air.

Clear 'The Bloody Mary' without letting any vampires revive.

Kill Amber with a melee weapon, and Evelyn with a ranged weapon.

Clear all 1000 Year Royals missions.

Kill a Sergeant mid-spin.

Destroy a body as it's being revived.

Clear 'Timur The Tinkerer' with only trap kills.

Clear all Dredged missions.

Clear Vall's nest using only headshots.