Here is the full list of all 24 DEADBOLT achievements.
Clear all Dredged missions.
Clear a stage with only melee weapons.
Clear all 1000 Year Royals missions.
Kill a Sergeant mid-spin.
Buy a weapon from Charon.
Kill a vampire mid-air.
Clear all Zombie Kingz missions.
Melee a bouncer to death.
Kill an undead... using the toilet.
Clear the first mission.
Earn every achievement.
Beat the entire game within 1 hour without quitting.
Beat the entire game without dying or quitting.
Get a five star rating on all missions.
Clear a stage with only headshot kills.
Collect all memory tapes.
Kill Puff without using the Tommy Gun.
Clear "The Bogeyman" without being seen.
Clear "The Bloody Mary" without letting any vampires revive.
Kill Amber with a melee weapon, and Evelyn with a ranged weapon.
Destroy a body as it's being revived.
Clear "Timur the Tinkerer" using only trap kills.
Clear Vall's sniper nest using only headshots.
Clear "Ibzan" without being seen once.