Thank you for the feedback, the list of ideas and bugs is growing fast :D
I coded the game, graphics, music and most of the sounds are from several asset packs. I also voiced the boss, but nobody has gotten so far.
I've tried again to try to reach the boss, but I've failed :p Perhaps another time.
Yes, but even with assets, it can take time to find and choose the right ones, and put them together. So I wanted to highlight it :-)