Nice use of the theme. There was a nice variety of equipment to use. Having them chosen for you at random added a bit of luck and needing to learn to use each well, especially when you only had one. When you get more you really need to think on how to best use them together. There were certainly some I liked more than others, and some that really only worked well in a team. It would be nice if you could unlock being able to select a specific machine, possibly even for a specific operator. As an alternative, being able to purchase not having certain ones show up. It would also be nice if there was a bit more info on the upgrades. Is it one point per level? How much HP do you start with? Is each operator different?
Overall, a good submission.