Here is the full list of all 44 Imprisoned Light achievements.
Collect 1000000 souls.
Get resurrected 100 times.
Kill 10000 monsters.
Die 1000 times.
Die 100 times.
Collect 10 peace pot.
Complete single player game.
Kill 5000 monsters.
Kill the reaper.
Kill 4000 monsters.
Complete co-op game.
Clear the Hell.
Clear the Shores of Damned.
Clear the Limbo
Activate special power 100 times.
Clear the Catacombs.
Kill 3000 monsters.
Kill 100 enemies using special power.
Unlock the Fire Bomb
Unlock the Fire Shuriken.
Kill 2000 monsters.
Unlock the Frost Shuriken.
Unlock the Shuriken.
Save 50 crystals.
Unlock the Fire Spear.
Unlock the Frost Spear.
Unlock the Spear!
Unlock the Fire Sickle.
Unlock the Frost Sickle.
Unlock the Sickle.
Unlock the Fire Sledgehammer.
Unlock the Frost Sledgehammer.
Unlock the Sledgehammer.
Kill 1000 monsters.
Unlock the Fire Axe.
Clear the Sanctuary.
Unlock the Frost Axe.
Unlock the Axe.
Start a co-op play.
Unlock the Fire Sword.
Kill 500 monsters.
Unlock the Frost Sword.
Unlock the Sword.
Kill 100 monsters.