Full list of all 93 Baldurs Gate II: Enhanced Edition achievements. It takes around 100-120 hours to unlock all of the achievements on Windows.
Finish the game with a full party of dead allies.
Complete the game solo.
Complete the game on Story Mode difficulty.
Acquire the thief stronghold.
Reach level 30 with a Thief or Bard.
Reach level 30 with a Cleric, Druid, or Shaman.
Reach level 30 with a Fighter, Ranger, Paladin, Monk, or Barbarian.
Complete the game on Legacy of Bhaal difficulty.
Reach level 30 with a Mage or Sorcerer.
Acquire the wizard stronghold.
Acquire the druid stronghold.
Acquire the ranger stronghold.
Acquire the cleric stronghold.
Have Disease, Fatigue, and Poison active at the same time.
Acquire the paladin stronghold.
Have Bless, Chant, and Luck active at the same time.
Acquire Despised reputation.
Become a Fallen Paladin or a Fallen Ranger.
Acquire the bard stronghold.
Have a Lore skill of 100 or more.
Finish the game without any party members dying.
Acquire Heroic reputation.
Have an Armor Class of -15 or lower.
Reach 150 Hit Points.
Kill 1,000 creatures.
Acquire the warrior stronghold.
Raised enough gold to hire assistance.
Increase an attribute score to 25.
Become a Grand Master.