I don't think this was too dark at all! Not even in the bad ending. You had a theme, you committed to it, and you executed on it pretty fuckin' well.
You executed the gameplay pretty fuckin' well too. Using all those mental stats as health bars, using distance as a form of resource... there's the foundation for a very solid roguelike or simple linear story here, if you choose to progress it. Tube-of-toothpaste brain aside, I half-hope that you do. You've got a very unique vibe, some very good dialogue, and a great unanswered mystery. Excellent stuff, especially for a first jam!