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