Man are you ever going to stop...
making such great music? I hope you don't :D
At first it didn't really felt like a boss battle to me because of your 2nd pattern ( 10-15 seconds into the song ) where to me it felt like some sort of song about a hero going on his journey. But then after that little part it was right on spot boss battle.
The ending was really, how to say, abrupt? But i like it this way :D
I liked that chorus thing towards the end, it was fabulous. I can't think of something to tell you to improve on cause you are elite. Sorry for not making a constructive review :(
I commend you for making such great music and i hope to hear more from you.