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