I loved the demo and level design. The final level was a real treat/trick level, at least the way I solved it. I had to magnet door to hold the magnet block until I was ready to jump onto the other platform while being fast enough to beat the box destroying me. It was a nice combo between puzzle and platformer/speed test level. I really only had 2 major bugs come up when I played:
1. The ctrl reset level required multiple presses up to 5 times before it would reset the level.
2. I couldn't aim the magnet with my touchpad on my laptop while holding E to aim. Though when doing all the aiming using the touchpad it worked perfectly.