This was one of the games I was most excited to play. As a retro gamer, I love everything about this game. You nailed the aesthetic you were going for! The music and even the font give this game that old school charm. If this game was in an arcade cabinet I could have easily assumed it originated from the same era as Pac-Man, Dig-Dug, Donkey Kong, or Mario Bros. I even love the names you gave to the enemies, they all having rhyming names and then there is Mike, an allusion to the enemies from Pac-Man. This game contains quite a few more allusions to classic gaming, which I will not spoil, but are greatly appreciated.
If you want to check this game out and you use Linux, I found that WINE can run it flawlessly.