Ooh 32, well done! Yeah it does keep getting harder, difficulty scales exponentially, and there's another insane spike at wave 50 (it's probably impossible lmao). I couldn't quite get those waves after you've gotten all the powerups to be difficult enough though, even with the exponential difficulty curve. I think I would've had an easier time hand-programming the early waves up until you're max build and then letting exponential difficulty go crazy for later waves. You live and you learn :)
But I'm glad you enjoyed the experience! Interesting to hear you say they were finicky on controller, I wonder what about it you found odd?
And it's always funny to see how divisive the story is for these kinds of games lmao. I think even if I'd just put in a skip dialogue button instead of the endless mode it could've helped out (especially for the cases where you die mid-story and need to go through the dialogue options again). Thanks so much for the wonderful comment and the insight!