Cool prototype for an interesting game mechanic! I was able to get the climb tool and the sword. After that I pretty much got stuck in a hole that I wasn't able to get out of. I like the general look and feel of the game. Keep up the work!
I didn't have time to test it properly, so it's possible that you can get locked in some places. Refreshing the page should put you back at the start without resetting the upgrades if you want to try another path.
