Wow, seriously one of the best games of the jam! The presentation was perfect (pretty much release-level), and the way the depth of the mechanics revealed itself as the game commenced was awesome. It was certainly complex, which made it gratifying to make it to the end.
One thing I'll note is that some of the balancing for the different weapon types could use some improvement; I ended my run with all "SHOT" metals, as its low-cost firing and special ability were incredibly useful against the hordes of monsters. Rebalancing may also give me a bit more incentive to switch between modes with my units.
Still, I had a ton of fun with this one, and was surprised with just how much time I spent playing it. I hope this one does well. Excellent work!