You definitely should be proud of this game!
I like how everything comes together in this game. It is simple, and it is clean. It is balanced quite nicely but upgrades still feel powerful and different from each other. The game has just enough polish to make it feel tactile and good to play.
I do wish I could have a speed mode where the animation sequence/enemy movement could just be instantaneous, then I can blaze through the game fast paced. Really enjoyable game, I like the side-ways falling block game feel.