You have a neat game loop but it was missing an increased challenge as time progressed. Perhaps you should add more enemy types after 500 or 1000 kills. I did have fun though so good job.
Thank you so much for playing Waves, enemy types and unlockable perks were the original plans. but ran out of time. Wanted to do leaderboard last minute and couldn't do that either. Anyway, Glad you enjoyed playing the game!
