Overall pretty solid. I don't feel that the "corrupting" of save files instead of just having lives really plays into the permanence theme well though.
Viewing post in Caves of Eternity jam comments
The idea was a roguelike where the upgrades that you get are permanent, but if that's the case then getting to the end was inevitable, which is why I thought about a timer that forces you to play fast... Eventually we stirred in the "losing saves" idea. At the moment I didn't think of it, but after making it, yeah it loses a bit of theme relevance. Thanks for playing!