Full list of all 41 Nobody Saves the World achievements. It takes around 20-25 hours to unlock all of the achievements in the base game on Windows.
The base game contains 34 achievements, and there is 1 DLC pack containing 7 achievements.
Find the treasure beyond the Gulp
Join the Thieves Guild
Become an Acolyte of the New League of Wizards
Do some journalism
Customize a Form for the first time
Find 5 mana fairies
Join the Knights Guild
Complete the Legendary Dungeon: Grand Castle
Experience true love
Upgrade an ability
Make a shop purchase
Escape from Nostramagus' basement.
Complete the Legendary Dungeon: Witch Queen Catacombs
Complete the Legendary Dungeon: Ancient Robot
Complete the Legendary Dungeon: Secret Corporation
Complete the Legendary Dungeon: Dragon Ruler's Alcazar
Locate Nostramagus
Meet Astrolabus
Defeat the Calamity
Unlock Dragon Form
Reach max Rank on a single Form
Reach max Rank on all Forms
Reach the max upgrade level of a single ability
Reach the max upgrade level of all of one Form's abilities
Attain the rank of Grandmaster Knight in the Knights Guild
Attain the rank of Grand Maester in the New League of Wizards
Earn the title of Master Fraudster in the Thieves Guild
Have a Form equipped with 4 Passives
Own one of every shop item in the game
Find the final mana fairy
Completely light the Dark Expanse
Learn the language of dolphins
Defeat the Calamity in NG+
Obtain every achievement in the game
Unlock the Mechanic form
Unlock the Killer Bee form
Be crowned the True Being
Reach S-Rank on the Mechanic
Reach S-Rank on the Killer Bee
Earn all 36 Medals in the Colosseum and talk to The Dueling Faces