Performance was fine on my end, I had maybe a frame dip or two but nothing substantial.
I really liked the feel and the controls of the mech. The UI could maybe use some more juice, like flashing lights when you get hit, and maybe some screen shake, it's easy to take damage and not realize it.
The SFX were good, you could probably add some random pitch variation to make them a little less repetitive.
I agree with others that I wanted a faster firing weapon. I was expecting the machine gun to fire faster, and was disappointed it was about the same fire rate as the rail gun. Love the rocket launcher, was meh on the grenade launcher. Didn't get what the "targeting now" weapon did, maybe an air strike?
I'd love a score counter, or something to track my improvement each time in arena mode.
That's all the feedback I can think of right now, I had a lot of fun blowing up the robots and figuring out strategies that worked (rocket launcher all the way)