Wow, what a truly outstanding game!! I played to the finish, after playing that final boss many many times, and enjoyed it all -- beautiful artwork, killer NES music, great level of challenge, cool characters, fun UI elements, neat ending, love the MegaMan vibes. Just an all-around beautiful and fun game.
If I had any feedback that might be useful, it would be that for me, the character felt a bit large relative to the size of gameplay screen, which led to, for example, not knowing which part of the dog should be under the ladder to be able to go up, or which part of me needed to land on a platform, etc. A second thought is that an animation upon losing all "motivation" could be a nice addition.
What a great game, I'm looking forward to what you do next!