The intro gave me super strong Newgrounds vibes. In fact, the art style reminded me of earlier games by Edmund McMillen, specifically, Super Meat Boy.
It was very fun experimenting with parts, and doing some wacky stuff, like pulling the module that gives the enemy +ATK right before it attacks, and then placing it back in place. I got past, like, 3 bosses, and then the game got pretty hard. It's very easy to accidentally lose some scrap at the end of the battle and then on the next one you don't really have any junk to spare to plug in the holes in the enemy before it explodes. But that's probably just the skill issue.
I'm floored by how polished this looks, from intro cutscene, to screen transition effects, to animations in the main menu - everything looks and feels great!