Zombies are something of a special interest for me, so I was super excited to see your game. The smashing pumpkins really are phenomenal, it's all the splatter you hope for without the gore factor and literally juicy. And even though the ravenous dead want to crack open my gourd to feast on its juicy innards, I still found it comfy.
Tying the shop to the level changes is a clever way of ramping up the difficulty, although a savvy player can spend all their money on pumpkins to generate an obscene amount of wealth early on. And while it is super fun to spam a thousand napalm-filled jack-o-lanterns at my enemies, it did make the game drag on a little long
Maybe pumpkins could become more expensive as you stockpile them, then it sort of puts a cap on how many the player can hoard
Great game, I really enjoyed it!