Reminded me of the beginning of Shogo: Mobile Armor Division, which was cool. The movement has a solid zippy-ness to it kinda like Armored Core, and I thought it was very well done.
I repeatedly found myself wishing there was a way to see through the top of my mech or see more of whatever my reticle was hovering over. I found myself wishing for more weapons to try, as I also couldn't get Q and E to do anything and ran out of ammo when I tried to kill everything. At the same time, zipping through the hail of shells on a replay without getting hit once just so I could take down the boss-thing was a lot of fun.
Solid foundation, you could easily turn this into something more!
For anyone else having the resolution issue on Windows:
Alt + Enter should trigger fullscreen mode in most cases