Very well done!
I love VGMs more than any other type of music and my friend, you've just added something to my playlist!
It's tracks like these that tell a story, you know? Which is why I found it so fitting that your description was as such.
The intro gives off a vibe of tension that immediately takes control of your senses as if you can imagine some enemy approaching, or you are staring down your final enemy. It is followed by a part of the track that sounds like it would play during an exchange of significant dialogue before the actual fight.
It then returns to the tense intro, as if they had just tested each other with a series of quick fake-out type attacks. After which comes the actual fight where they go all out. The use of the choir is always a welcome addition to a type of orchestrated track such as this.