I'm somewhat close to having at least a preliminary entry even if it doesn't quite fit with my original description. I seem to have almost a bullet hell sort of thing. If I can get around to positioning some actors on the levels, and maybe be able to do more than just one level, or maybe load at least one level without having to use some shortcut keys, and maybe do something like count towers destroyed to be like an end condition... then I think I could call it a game.
I'm pretty sure I can get enough of those things together before time is up. Just not sure which ones and whether any of the other stuff I wanted will make it in.
The final sleepless nights are upon us. Good luck everyone.