I like the atmosphere of the game, the music setting and light completes the experience. The walking sound effect, and the lens effect on the screen is also good. I wonder if the spikes could have one more animation step, where the spikes are completely out, not just peeking up from he holes (I died once thinking it was safe.) The camera can be zoomed out just a little bit (maybe not needed since the atmosphere is a bit creepy/scary.)
The graphics are nice, and the controls work well. I’m not sure what the purpose of the power up was, but it looks like you have thought about extending the game with more power ups maybe.