Here is the full list of all 30 Time Glitch achievements.
Rogue and Cleric defeat the boss together
Rogue and Mage defeat the boss together
Rogue defeats the boss without any help whatsoever
Warrior and Cleric defeat the boss together
Warrior delivers the final blow
Warrior defeats the boss with a critical hit
The whole party gets frozen in time and defeated
The Diamond Hourglass is stolen from the Cleric
Rémi leaves the table
The party gets cursed
The party gets killed by the Badger
Matej leaves the table
Chris leaves the table
Chris takes the bus
Warrior gets killed
Meet the players
Beat the game in less than 60 seconds
Beat the game in less than 35 seconds
Lose the game in less than 10 seconds
Experience 25% of all possible timelines
Experience 50% of all possible timelines
Experience 75% of all possible timelines
Experience all possible timelines
Know all the possible dice rolls
Beat the game without knowing the dice rolls
Beat the game despite the Cleric skipping a turn
Learn more about the Rogue
Learn more about the Cleric
Learn more about the Mage
Learn more about the Warrior