This was fun. I accidentally dismissed the parts panel before I was done building my bot, and couldn't get it back, so I went into the third battle completely unarmed. I did manage to ram my opponent into one of the side panel things though, so I didn't go down without a fight.
It's really impressive how much control you have when building the bots.
As I was writing this I realized the parts had arrows on them, and I could probably get better steering and stuff if I paid attention to those, and probably do a better job of trapping opponents with saw blades if I got them rotating towards each other, so I started up another game. On the first battle none of the bits connecting the parts to the bots loaded in and we were both loose piles of spinning parts, so maybe I'll come back and explore the depths of the mechanics later. It was fun though