What a fun little game !! It really reminded me of the classics it is inspired by and it was very enjoyable. The controls are Extremely responsive (bravo !!) and there is enough variety between the different stages to make it interesting.
My favourite part has to be the boss fight, the music fits very well and the boss patterns were fun to play against. Also its dialogue is funny :) Well worth the journey to get there.
Also the fact that all the machines were hand-drawn by you and your friend is such a cute little touch, I love the individually that your assets provide (and they're very well done too!).
Thank you for the game !! <3