It was actually the first jumping test in Cistern where you go around the little waterfall but I've since gone back and done it after only a few tries - so maybe I was still super tired yesterday from the jam! I've now played on some more but I'm now stuck in Caldera going across the rotating log thing. I'm happy to accept this isn't really the game for me but that doesn't mean anything - it's a really cool game that I wish was better at!