the spikey things blend into the background, might color shift it to make it stand out a little bit more. 

not sure how this fits into the theme. 

The art is great and the sounds are amazing! It would be really interesting to also have some enemies there whike you have to stick to the light, it has good potential for a fleshed out game

Very Good! The game is just a little short.

also, you forgot to remove the friction for the player, causing it to stuck on walls.