Waves stop spawning after the first stage. I played to stage 3 to see if it would start working again but it didn't. There's enough sound to get you through, but it was missing a lot of polish for sound, and UI. There were a decent amount of grammatical errors, including in the cover art! That said, this game was VERY fun and if the spawning didn't break I would've kept playing. Give this game another month of work and polish and it would easily be sellable. Great Job!
I would appreciate it if you tried playing my game too and any feedback would be awesome! It is multiplayer, so having a friend/s to play with you would be great, but it's not necessary.