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