I really enjoyed playing it, the little narrative framing added a lot to its vibe and uniqueness. I was surprised by how polished the game was, it felt like playing an early access title with a longer production time. Then I saw your team size in the credits and it all added up :D
FYI, I paused the game for a few mins in wave 4, and after resuming it, that banger music and the damage sounds didn't play anymore.
Great job nonetheless, very fun game!