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