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