Yes! your robot first made me think of older games with more rudimentary gameplays, but Gun Hazard is indeed the most satisfying mech game I ever played, I completed it several times and can't get bored with it.
Ooo that made me think of games like Gun Hazard and Metal Warrios for Snes
Gosh, this reminds me of sidescrollers. I miss non-humanoid avatars as well as science-fiction/robotic settings.
Oh yeah, this one doesn't resemble those at all, but those games were just amazing!