Ah I see, I was little bit confused at first on how to play but I got hang of it, not bad, simple. I would only change the color of the thing spreading (doom i think) that hurts you because it's a color too similar to custom shadow/lighting (which looks fun)
Good job on the entry
For anyone confused just in case, here's a little guide: Princess follows you, don't bump into her because it will hurt her (can happen on some corners), make sure to read the message sidebar and to open initial barriers break the crystal