Here is the full list of all 38 Deathstate achievements.
Beat the game as the Embalmer.
Start and end a boss fight with only one hit remaining.
Die at Depth 1 as the Embalmer.
Gamble with the Merchant as Scar.
Beat the game twice sequentially.
Drink 10 potions as the Scientist.
Unlock all bestiary entries.
Kill a boss while under the effects of a Hot Blood potion.
Teleport 20 times in one game as the Starcreep.
Beat the game without picking up a weapon item.
Beat the game.
Turn into a Demon as the Priest.
Resurrect 30 or more enemies with a single Awaken potion.
Enter the Lost Arcanium.
Kill an Elite enemy after time runs out in a level.
Beat a level without taking damage.
Find 500 gold in one run.
Die in the first minute of gameplay.
Find a Demon or Horror aspect stone.
Find and equip 5 different grimoires in a single game as the Seeker.
Enter the Maze of Ix.
Enter the Ossein Swamp.
Escape a level after time has run out.
Enter the Fortress of Koth.
Unlock all playable characters.
Punch the final boss as the Brawler.
Collect three eye organs as the Eye.
Beat the game as the Skeleton King.
Kill a boss while under the effects of an Introspection potion.
Beat the game without picking up a grimoire item.
Beat the game at maximum Desecration.
Beat the game without taking damage.
Enter the Dark Realm.
Die 100 times.
Play the game for a combined total of 24 hours.
Have 20 or more organs at one time.
Find at least 140 unique items.
Unlock all other achievements.