Thanks for testing the game out !!!
Im sorry about the "rewalk the whole level" thing !!!
I shoudlve made a little tutorial ==> by pressing b you can set the location of the respawn to your location. This makes it possible to create bridges, and structures kinda "complexe" without it getting tedious :O
I thought the commands were added to the jam page, but they're just in the game page, sorry for the inconveniance !!!