Thanks a lot, I am so happy that you enjoyed the game 🤩 I am glad that it managed to get across the story well :) and thanks for the compliment, it means a lot to me :)
Nothing new since the flash version was created. So the flash version has smooth transition between rooms and music. I am glad that you enjoyed it and still :)
I hope the following helps you with where you are stuck :)
Defeating the second boss The second boss can be damaged using mines only, so you need to time them.Defeating the third boss The third one (the frog with eyes) can be damaged using the grappling hook towards their eyes.
Congratulations :) I hope that you enjoyed it at least and sorry about the difficulty in the brown crystal area :) For people reading into comments, there is options for helping with respawn in these challenge rooms called challenge assist :)