Here is the full list of all 29 Your Adventure achievements.
Design your character's appearance
Pick a class and weapon
Name your character
Pick your character's pronouns
Pick where your character is from
Name the place that your character is from came from
Scrap your character and start anew
Die
Start a new game three times
Find all of Christy's cards
See the gravestone of Cappin' Tubbs of the Kitty Kitty Bang Gang
Have Finley West join your party
Have Christy Belleforte join your party
Have Damien Trim join your party
Have Dharts Fo Esruc join your party
Have Theo The Cat join your party
Have Theo The Cat temporarily leave your party
Beat Tic Tac Foe
Beat Space Investors
Beat Eggstroids
Survive the Minotaur Maze
Beat the Paladin Slime
Beat the Galaxy Savior Fuzz
Beat the Scrambled Eggsassin
Beat the Rose Guardian
Beat xX_Lucian_Xx
Give money to the honduran ghost bat to buy an apple
Watch Damien kill Dharts and do nothing to stop him, you heartless monster
Finish the demo