Y'all made the combination of roguelike rpg and pool-based combat work really well, it was a lot of fun setting up perfect shots to bump enemies into eachother, or ricochet perfectly around something and knock one into the lava.
At times I found myself in a corner of the screen with no enemies visible so I was forced to either shoot blind or take a bunch of small shots, it would've been nice to be able to zoom the camera in/out.
Also as mentioned I think it would be a good design choice to try to incentivize players to take as few shots as possible, perhaps even just by tracking and displaying the number of shots taken.
Overall, innovative and fun!