At first I didn't get it, after a few levels it became clear. I do see the idea and I like it but it didn't feel right to me because some things were just not clear, it felt like for example when they said all items except keys were deadly it should have allowed me to use any item but a key to unlock the door, not the random little chunk of the level. I couldn't get past the level that took away my jump, also a bunch of the text boxes got stuck at the top of the screen and wouldn't go away, they were layering over each other from each level.
The character controller was a little janky, like moving into blocks while in midair would make it jitter and get stuck, but you're well on your way with it.
Anyway I thought it was a really funny way to interpret the theme.