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