Wow, I'm so excited to see this game here :)! I've genuinely been thinking about the idea of a time-travelling self-stealth game for a while now but the idea of putting it into an item in the level didn't occur to me, that is really nice!
I was initially a bit confused about the colliders, but when I realised it was a bug, I played through the game again and all is clear, so I will disregard it in the rating :). Very well done!