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