Nice game, though I found a bug. I was fighting on wave 3 and I forgot to upgrade my scavengers, so I quit the game. I noticed on the bottom-left of the main menu, a bunny stuck. Through the shop, it was still there, and when I started the wave, it moved along, but I could not shoot it. It became invulnerable, and I quit the game again, and another bunny was stuck. Please fix this bug. Great game anyway.