Astral High(Apple)

Achievement Unlocked: Astral High

Enter the Aethereal Plane for the first time. Just make sure you find a way back to your body or you’ll just end up as star matter for some god to munch on for their afternoon snack.

+1 Wis

+1000 EXP

Reference
Unlocked in Chapter 102 "It's Time To Get High In A Dungeon"