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