Thanks for taking the time to give this detailed criticism. The camera did not work nearly as well as I'd hoped, although I did intend for it to be down "on the field" to match the role reversal vibe rather than overhead, which probably would have been most comfortable. And yes the controls were made early in the build and I was focused on fixing other things. I should have just had all creeps follow you, or do a point and click system. Also most of the UI elements I put in either didn't show up for everyone or didn't work during testing so I scrapped them, so I understand that frustration.
As for the difficulty, I wish I had set aside some time for a tutorial, as that would have conveyed some of the intended strategies I had in mind, but I ran out of time.
This jam helped me understand quite a bit about game design. However, I definitely over-scoped. Will keep these lessons in mind for next year.