I really enjoyed the art and music. The movement was just unbearably slow.
The best part of the experience is the obvious Metroid influence. The transitions from room to room were great, but sometimes the obstacles were placed too close to the edge and unless you stop upon entering every room, you're all but guaranteed to get hit.
I also couldn't actually figure out what the timer was for, or really most of the UI elements. Though with more time a screen at the beginning could have explained it all.
Overall one of the better entries of the jam, I just feel that gameplay could have been sped up a little.