This was very enjoyable, I loved how the mechanics worked. The moment I shot the bullets, I was curious if I could shoot myself... Hah, I'm glad I could when I saw the mirrors later, and it just clicked.
The music is really nice, and the art itself looks very polished. Movement felt very smooth, and the firing was satisfying, no complaints there. I'm especially glad when there's a restart button (especially a fast one) for convenience.
Great work.