I think this is one of the games that illustrates the beauty of simplicity . I like it, good work

The music is cool and the end was a surprise haha I enjoyed it! ^^

One thing to remember though for level design the door with the spikes just behind was a little bit frustrating and the very tight room between the spikes are maybe too hard for some people (especially with disabilities) other I liked the fact you still have the keys when dying. I guess it wasn't intended? Connecting the event of the "player dying" to update the key variables is what you could have done if you didn't know how to do it. But well, maybe you knew it and didn't have time!

Anyways, congrats for the working game uploaded in due time! :)