Full list of all 43 Immortal: Unchained achievements.
The base game contains 31 achievements, and there are 3 DLC packs containing 12 achievements.
Get cursed while playing as The Cursed One
Finish a normal playthrough as The Cursed One
Get all curses while playing as The Cursed One
Complete New Game+
Complete New Game++
Complete New Game+++
Complete New Game++++
Kill 100 enemies with a lightning blaster
Finish the Nayra questline
Collect all lore items in Storm Breaker