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