The art style is quite nice and with some music you could create a really cool atmosphere. However, I had some issues with the gameplay. The controls feel a little unintuitive, especially the arrow + W combination. The small brown square platforms in (I think) level 4 don't work consistently. I was glitching all through and around them. In the level with the key, I managed to fall into the void, by just running to the right (put a wall there).
Also, I think you could've done more with the clones, allowing some control over them.