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