Hi! Thanks for feedback! I feel the difficulty curve is a bit high considering there are cases where it's difficult to see things like spikes amidst the chaos, however, I sort of want to preserve that Spelunky sort of game play. I will find some other way of bringing down the difficulty so that the game is more fun and enjoyable for everyone! In regards to the music, I didn't have time to implement it, even more so, I couldn't find the right music. I also wanted to add sound effects, but couldn't implement them in time. Your proposition on collaborating for music seems interesting, and perhaps we discuss this on a different platform. You can contact me using my email on the Dino Nuggie Studios game page.
Thanks for playing, and I hope to speak with you soon!