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