[DiscipleofBob]

Originally Posted by Dr.Epic

So, I think I'm almost finished with the game...

Spoiler

I beat Coach Oleander's brain in the tank, and then I threw my own brain into the tank, and then I saw Oleander as a child with a rabbit, then I turned off the game and went to bed for the night.

Yup. I wish I would've mentioned something earlier, but it's worth noting that while you can visit all the mental worlds at this point, you can't go back to the overworld and get missed collectibles like the cards, Psi-cores, or brains.