There are fountains you can set as save points before bosses, and if you didn't know this already, despite the lack of a main menu there is a working save file system! As long as you load a save before the fall you can resume where you left off. Honestly I underestimated how easy it would be to get lost given the fairly small scope of the game, but my friends tell me its a maze, so I'll definitely add some sort of map and compass when the jam is over.