It's funny you mention all that!
Regarding the ending, I had to rush it during the last two hours of the jam. It was supposed to be funny too, but also much more polished, but apparently, it gets the job done.
As for the music - I was actually supposed to be the composer myself. That was the part I was most looking forward to, but the work turned out to be much harder than expected, and since my pixelartist teammate could only put very little time into the project, I had to decide what to cut. Because I didn't have time to create music I’d be proud of (or to add settings to let players turn it off if it got annoying), I ended up leaving the music entirely to focus on sound design.
For the same reason, I couldn't add mouse settings... But I'm glad to hear you enjoyed the game, even in its slightly undercooked state. Thanks for playing!