So for this game, I've decided that there will only be one stage. It'll be like a running gag, since Marian never gets kidnapped/shot, there's never a reason to go to any other screen. Right now the Linda's remain on the same difficulty, although in future releases their difficulty will ramp up as you progress, and I'll probably implement a wave select at some point, with moves specific to certain waves. We'll see.
On another note, $50+, be sure to let me know what you want this month (if you haven't already) . Note that I do not have a Phoenix Vs. Pantera update ready yet. You can ask for it, but it might be a bit delayed if that's the choice.