I was unable to complete the final level. I thought at first I had to survive long enough to pay off my debt to actually be able to purchase anything but it seemed to just be stuck in the negative?
Some SFX when an enemy dies or is hit would have been nice. Even without particle effects or animations, SFX alone can do a lot for that sort of thing.
I would get boxed in by enemies sometimes with no way to kill them fast enough to escape. I feel if I could simply walk through enemies and take some damage in the process, then that problem would have been solved.
Very fun game loop. Not sure if there's anything after the boss battle as I was unable to complete that level, but what I did play was genuinely fun. I like the idea of being able to build a fortress of turrets that shoot at stuff with me. With there being some diversity of choice, in regards to the turrets, I'm able to try different strategies such as spamming as many of the cheapest turret.
Overall, fun game.