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