In Hell, you have the option to travel back to the Land of the Living instead of squishing grapes. But you come back as a GHOST!
All the colors in the streets are muted and other living Glitchens are blurs... but you can readily see other ghosts.
Using your orb (or potentially a special ghost tool... like a skull or some such), you can make yourself slightly visible to the living. You can also request to possess the body of another Glitchen (to which they'd have to consent.
I have no idea what other game play with might lead to. Maybe a complete dead end. (Get it?! 'Dead' end! Ha! I slay me!)