Here is the full list of all 50 Icewind Dale: Enhanced Edition achievements.
Complete the game on the Heart of Fury difficulty setting.
Reach level 30 in three classes with the same character.
Reach level 30 in two classes with the same character.
Reach level 30 with a Mage or Sorcerer.
Reach level 30 with a Fighter, Ranger, Paladin, Monk, or Barbarian.
Acquired the Singing Blade of Aihonen.
Discovered the true identity of the Lonelywood werewolf.
Complete the game with only a single party member.
Complete the game on the Story Mode difficulty setting.
Obtain Grand Master weapon proficiency level.
Reach level 30 with a Thief or Bard.
Reach level 30 with a Cleric, Druid, or Shaman.
Completed Icewind Dale.
Killed Belhifet.
Acquired the Restored Blade of Aihonen.
Revisited Easthaven.
Acquired the Black Swan Armor.
Restored the Arboretum to its former glory.
Turned Malavon's Iron Golems against him.
Found Pale Justice, the Holy Avenger sword.
Killed Icasaracht, the White Dragon matriarch.
Completed Heart of Winter.
Visited the Sea of Moving Ice.
Obtain a Lore skill of 100 or more.
Brought a rose of ice to the bard, Murdaugh.
Assisted the dwarven smith Tiernon to forge an ice weapon.
Visited Gloomfrost.
Acquired the infernal Vexed Armor.
Visited the Burial Isle.
Completed Trials of the Luremaster.
Memorized Malavon's Rage.
Visited the ruined castle in the Anauroch desert.
Freed all slaves in the Wyrm's Tooth glacier.
Killed Joril, the leader of the Frost Giants.
Visited Wyrm's Tooth Glacier.
Killed Terikan, the Lich.
Visited Dorn's Deep.
Killed 1,000 creatures.
Reduce Armor Class to -15 or lower.
Visited the Severed Hand.
Killed Yxunomei, the Marilith demoness.
Reach 150 Hit Points.
Visited Dragon's Eye.
Increase an attribute score to 25.
Have six party members who are evil-aligned.
Have six party members who are neutral-aligned.
Become a Fallen Paladin or a Fallen Ranger.
Have six party members who are good-aligned.
Sang to the Sea Spirit Elisia.
Visited Kuldahar.