Full list of all 40 Nobody Saves the World achievements worth 1,180 gamerscore. It takes around 25-30 hours to unlock all of the achievements in the base game.
The base game contains 33 achievements worth 1,000 Gamerscore, and there is 1 DLC pack containing 7 achievements worth 180 Gamerscore.
Have a Form equipped with 4 Passives
Locate Nostramagus
Complete the Legendary Dungeon: Witch Queen Catacombs
Become an Acolyte of the New League of Wizards
Do some journalism
Complete the Legendary Dungeon: Ancient Robot
Join the Thieves Guild
Find 5 mana fairies
Experience true love
Customize a Form for the first time
Join the Knights Guild
Complete the Legendary Dungeon: Grand Castle
Make a shop purchase
Escape from Nostramagus' basement.
Upgrade an ability
Complete the Legendary Dungeon: Secret Corporation
Complete the Legendary Dungeon: Dragon Ruler's Alcazar
Hidden
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
Own one of every shop item in the game
Find the final mana fairy
Find the treasure beyond the Gulp
Completely light the Dark Expanse
Learn the language of dolphins
Defeat the Calamity in NG+
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