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