this is one of my favorites that i've played so far! the art and music were super polished, and the gameplay was compelling, which added up to giving the game a really goofy fun factor that i loved. it could use some balancing to make it more challenging, but either way i had a great time.
i really think that the player's construction should be part of their collision bound (kind of like Tumiki Fighters) so upgrading has a downside. and that potentially even parts could get broken off and carried away by the enemies (and maybe even used by them)!