The visuals etc are fascinating - I don't have any idea of how hard it does go that, but it feels very high-level 3d stuff, especially for a jam! Really cool!
It took me a while until I recognized the game mechanics, so I was just swinging my sword for a few levels, and then I switched between a few mechas, figuring that I still liked the sword... But by accident, I realized that extra bounces improve bullets :D So it became way more fun when I set mechas so that I get 4 bounces and destroy half a map with one blast! Now that was fun :)
Great job!