I'm really happy that this is your first game jam. I get the frustration of not getting the game how you want it to be, but that's okay! What's important is is try to get something done, that has a point A and B, without having to think too big. For instance, you mention that your scope was too big for a two week jam. Here's what I recommend, if you participate in another jam where it lasts for a week then try and make something that you think can take only four days. Then you can spend the next couple of days fixing bugs, QA, and thinking about what other ideas that can benefit your game.
Now going to your game, I'm sad to say this but I can't seem to complete it. I have to ask: Is level 1 passable? I can't get across the next platform, as I seem to run out of stamina all of the time.