Here is the full list of all 19 Oraxum Trials achievements.
Place a level 3 Natural crystal.
Complete chapter 1.
Prestige for the first time.
Prestige 10 times.
Prestige 50 times.
Place a level 3 Elemental crystal.
Place a level 3 Shadow crystal.
Place a level 3 Nebula crystal.
Place a level 3 Soul crystal.
Place a level 3 Divine crystal.
Generate 1,000 energy per second.
Generate 1 million energy per second.
Generate 1 trillion energy per second.
Generate 1 quintillion energy per second.
Have a broken tile in every board space.
Prestige without manually selling energy or venting corruption.
Prestige during a basic tutorial.
Prestige without using any sigils.
Complete chapter 2.