Thanks so much for playing!!
I know you had mentioned not getting paint for each creep--that's not a bug, every other creep gives 1 paint. This is for balancing reasons so you don't get too much paint. Managing a limited number of towers is the main challenge of the game!
I'm glad you caught on so quickly! Most of my testers really struggled to beat normal and especially hard mode. However, there's 4 more levels of increasing difficulty after hard mode, so if you ever do best hard mode without jinxing yourself, you'll unlock new levels of intense challenge!!
Thanks again for playing, Cry! Great video!