Here is the full list of all 30 Slain: Back from Hell achievements.
Defeat the game without losing a single life.
Defeat the game without using any Mana.
Complete the Wolf Run without losing any health.
Kill Vroll without taking any damage.
Destroy Vroll and liberate Chalh within 3 minutes.
Find all five pieces of the Talisman.
Defeat Hogre without losing any health.
Defeat Malikesh without losing any health.
Defeat the Ice Beast without losing any health.
Defeat the Mother Beholder without losing any health.
Defeat the Banshee Queen without losing any health.
Defeat the Thorn Beast without losing any health.
Finish the Bloodgrounds without dying at all.
Headbang after every single boss has been defeated.
Hit 6 Ice Meteors back at the Ice Beast.
Defeat Lupus Rex without losing any health.
Complete Highlands level without killing an enemy with the flame blade.
Escape the Highlands Caves through the secret passage.
Watch 30 enemies get killed by traps.
Successfully execute 100 Critical Strikes.
Destroy 30 enemies with reflected projectiles.
Dispatch the Mother Beholder within 30 seconds.
Slay 8 of your enemies in a trice.
Squash a Wolf Guard in a crusher trap.
You Have Been Killed 100 times. Rejoice!
Defeat the Fire Hounds without losing any health.
Reached the top of the Blood Tower without falling in any gore pits.
Kill every Beholder in the Hive without using mana.
Die for the very first time.
Successfully avoid the first spike trap in the Bloodgrounds.