I agree with what was already mentioned about the dying. I found it really frustrating that I couldn't find the key on one of the levels and kept dying. I just skipped that level. There is another game in the jam (deactivated) where you run through a miniature version of a maze in 3rd person and then you have to run through the full version in 1st person. I think something like that would make it more interesting. Where you are shown a map of the level first so you can kind of "plan" your route. Then you could make the levels more intricate. I would also love a visual timer rather than just the sound, as there were a few times I was like... Nahhh I MADE it in time! But it still killed me.
Great effort!