Here is the full list of all 30 Wanderlust: Rebirth achievements.
Get ending 1.
Fully feed a Blood Slime.
Open a secret chest.
Complete a challenge.
Re-spec your character.
Use a Soul Charge.
Complete a Chapter (3-4 Players).
Complete a side quest.
Complete Chapter 1 on Normal mode.
Complete a Chapter (2 Players).
Almost survived the tutorial.
Collect a stack of 99 for any material.
Change the gender of your character.
Augment an item.
Get sax rolled!
Beat the game without returning to the lobby.
Roll the Luck Box in The Crawl.
Open the blue chest in The Crawl.
Get ending 2.
Get ending 3.
Open the orange chest in The Crawl.
Defeat Chapter 2 secret boss on Epic.
Defeat Chapter 5 secret boss on Epic.
Defeat Chapter 6 secret boss on Epic.
Defeat Chapter 9 secret boss on Epic.
Wear all unique gear.
Equip a Legendary weapon.
Beat Chapter 10 without getting hit on Epic.
Defeat a Blood Golem in The Crawl.
Get 100% on every Chapter.