ah nice, I just tried it again and is it me or is the game a lot harder now? I die in the second round every time, before even my first purchase arrived. And I can't just buy some health potion either, because I generally don't have enough money after the first round.

Okay, I managed to survive a little longer by taking my house and turning it into a much better defense around my chest. Now it's starting to last a while and be fun, though there are still some hidden mechanics (like how exactly do the third enemies attack? How do the towers work? can they shoot over walls (and if not, why not? would make building a proper defensive base a lot more fun. :D )

Edit: Oh yeah, the camera is super jittery and that's really annoying. I think it's because it's sticking to the pixels? I think it would feel a lot better with a smooth camera, even if that means there are half-pixels on the border of the screen.