Oh wow, I was trying alt-enter, which is usually what Windows games use for switching to full screen. Haha. I would add that to your description for others as I'm sure I'm not the only one.
I just replayed it in full screen and was immediately able to get 2x as far in the level! Haha. I think there should be a slight delay, even like a half second, before you give player control after dying because I would fall off from previous inputs as I was spawning back in.
