If fully developed, this seems like the type of game I wouldn't mind getting. I really like the graphics, audio and mood. There's a ton of potential here. You could create all sorts of crazy puzzles and put all kinds of add-ons to the mech.
The controls, like others have stated, are kinda weird, but I got used to them. They really do feel like bizarre controls on a mech, and they work for a puzzle game approach. Others have complained about the energy level, but personally, I found no problem with it.
My biggest complaint here would actually have to be the turrets. Because the controls are so non-intuitive, I couldn't figure out how to get past most of them. Perhaps in a hypothetical full version, the turrets wouldn't show up until later levels and the threats could be limited to, well, anything else. Spikes, electric beams, etc. Also, perhaps a shield add-on could be created, and a way to move the camera so you can see upcoming turrets.
Overall, this is one of the best games I've seen thus far.