Here is the full list of all 31 Rack N Ruin achievements.
Beat the game in less than 1 hour and 45 minutes.
Finish the game on the Hard difficulty.
Finish the game.
Destroy Ruin without using healing items.
Destroy the Demon Governor using only the Demon Horn.
Collect all usable items, upgrade items, and ability upgrades.
Unlock all key doors.
Kill 5000 Enemies.
Find all 10 Souls of the Innocent.
Resurrect Sally.
Corrupt all the shrines.
Defeat all the wave spawners.
Destroy the Goddess.
Destroy the Goddess without using abilities or spellbooks.
Kill a Leopard Guardian without triggering the roll.
Enchant the amulet.
Earn 150,000 Souls.
Feed the Pile of Gunk to Norbit the demon.
Use 10 Wisp Dusts.
Fully stock Baba Yaga's shop.
Escape the Crystal Prison.
Destroy the Crystalized Hero in less than 105 seconds.
Banish Nihil.
Destroy the Guardian without ever taking damage.
Solve the Vampiric Ring riddle.
Destory a Water Elemental.
Find The Groto secret.
Defeat Amon.
Destroy Amon without using fire damage.
Hit a bomb with the Blade of Ruin.
Corrupt the first shrine.