The idea of how these powers work is an interesting one, however I'm not sure how this fits the theme. I get that the idea is that you don't get to choose your power to attack various obstacles, however only having access to a single power throughout took away from that central premise a lot.
If there was a more random element to the powers throughout gameplay, maybe it would have fit the theme better. But as it stands, it doesn't seem to work for me.
I did however enjoy the art for the enemies. Based on the style you went for, the circular demon thingies were very creepy and the fact that they were constantly all over you and forcing you to react, evoked a feeling of desparation. On that note, you did quite well.