Here is the full list of all 54 Baldur's Gate 3 achievements. It takes around 200 hours to unlock all of the achievements on Windows.
Complete the game in Honour mode.
Become Bhaal's ultimate weapon - become his Slayer.
Coat the streets of Baldur's Gate in blood - become an Unholy Assassin of Bhaal.
In the Wyrmway, wait until the dragon is midflight, then knock it out of the sky - KAPOW.
Romance the Emperor.
Go on a date with Karlach - now that's playing with fire.
Defeat twenty opponents while a party character is drunk in a single playthough - down them.
Break Wyll's Pact with Mizora.
Earn a hundred gold from playing sweet, sweet music in a single playthrough.
Claim your Throne of Blood: take control of the Netherbrain for Bhaal and break the world.
Complete the game in Tactician mode.
Rescue Sazza from the Emerald Grove, Goblin Camp, and Moonrise Towers in one playthrough.
Save every tiefling refugee you can throughout the game in a single playthrough.
Multiclass into every class in one playthrough without asking Withers to change your character.
Break out of prison after being arrested - aren't you daring?
Kill the Surgeon before he performs surgery on you in combat.
Craft an item in the Adamantine Forge.
Kill the Adamantine Golem without using the Forge Hammer.
Pet Scratch and the Owlbear cub at the same time - the greatest joy an adventurer could ask for.
Consume a parasite and unlocked a new power - is it meant to wriggle the whole way down?
Create three unique alchemical solutions in a single playthrough - bottoms up!
Recruit a hireling. You can befriend them or use them as cannon-fodder - we won't judge.
Find and summon the quasit Shovel. Or is her name... Fork? Maybe Basket?
Use one enemy as an improvised weapon against another.
Gift Shadowheart a night orchid - her favourite flower. Always knew she was a softie.
Stablise Gale's Netherse orb.
Steal the Blood of Lathander from underneath Rosymorn Monastery.
Kill a character with an unarmed strike.
Dig up five buried chests in a single playthrough - treasure!
Defeat Commander Zhalk in the Nautiloid.
Make the ultimate sacrifice: become a mindflayer to defeat the Netherbrain.
Reign with terror: take control of the Netherbrain and bend the world to your will.
Finish the game (with a heartfelt 'thank you!'' from Larian Studios).
Save the day: kill the Netherbrain and destroy the Absolute tadpoles.
Kill the Red Dragon in the Upper City.
Long Rest using only alcohol - a time-honoured dwarfish tradition.
Kill Orin while her cultists are performing their ritual chant.
Kill a creature with falling damage.
Defeat Gortash in Wyrm's Rock without activating any traps.
Read 100 different books in a single playthrough. Adventuring isn't just daring quests, you know.
Play fetch with Scratch - the best boy in the Realms.
Leave Act Two - Baldur's Gate is just over the horizon.
Defeat the Toll Collector without her using gold against you - excellent budgeting.
Defeat the Apostle of Myrkul before it consumes any Necromites.
Rescue all the prisoners from the depths of Moonrise Towers in one playthrough.
Successfully use Detect Thoughts to pry into someone's thoughts.
Kill the Spider Matriarch before her eggs hatch - why do they have so many legs?
Leave Act One - for somewhere altogether darker.
Ally with Voss against the Githyanki God-Queen. Good luck.
Complete ten background goals in a single playthrough - you are one with your character.
Take four full long rests in a single playthrough - adventuring's tiring work.
Let Astarion bite you - ouch.
Perform five attacks in one turn. Your enemies won't know what hit them (literally).
Take control of the Nautiloid and escape the hells.