Here is the full list of all 20 NOVA CORE CHAOS achievements.
Make 1 Nova
Make 5 Novas in a single session
Play as each Nova at least once
Play a game with a full crew
Fail to make a single Nova
Make 50 Novas in a single session
Use an emote
Use every emote at least once
Get stuck in a room for at least 30 seconds
Make 100 Novas in total
Make 250 Novas in total
Make 500 Novas in total
Teleport for the first time
Throw something for the first time
Hold an item in your offhand for the first time
Sprint for the first time
Head through a water tunnel for the first time
Deliver a wrong order
Throw something in the trash
Watch all recipes