Very slick, music was on point and I liked that all the ui options were triggered by my arrows. Little touches like the signposts responding to physics was very cool.
The sensitivity controls didn't seem to work for me?
I found it a bit annoying that the drones keep shooting if you knock them over but they don't explode. A few times I knocked over a guy thinking he was dead, only to discover later that he could still shoot me.
Seriously cool game, found the upgrade system very interesting as well. Well done.