Sorry about that, I should've had the game double check that you wanted to quit before shutting itself down. I do think you were on the last level, that one has a bug where sometimes too many enemies spawn in the same spot and I believe that the vertical speed you gain from landing on one is additive so landing on the broken spawned stacked enemies launches you way too high into the air. That level definitely needs checkpoints as well. Thanks for playing and apologies about that last level, it was a bit rushed.