First of all I've never seen this type of controls before, it's really cool!
The only downside for me is that I couldn't pass the second level... I realised after a little while you get more jump height by jumping as soon as you hit the bottom of the ramp, but still couldn't get the height.
In future maybe ease the player into those kind of game mechanics.
Otherwise though, I really liked the audio, the mech felt like it was really stomping around, and the UI for changing gears made perfect sense after a little practice.
Keep up the amazing work, well done! :)