Thanks for playing!
All of the things you highlight are known points for me...I simply ran out of time to place enemies. By this point I've continued working on it in the background, and I've been placing more as I intended. The tip about the stretch mode is excellent, thank you! I've been using the same 1080p monitor the whole time so it never occurred to me that this was a possible issue. That said, the 720p window size was what I used for the whole jam, so that's probably the "best" form. And lastly, hanks for the driving feedback, I'll be tweaking that going forward, but suffice to say it's the best I could do before the end of the jam.