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