Rockin'!
I like this "new" guitar VST you have. It has a much more realistic sound to it, than the ones I've heard in earlier songs.
It has a flavor to it that sounds like it was done by "The MiniBosses". If you or someone else did the electric guitar live, then that's definitely a ig step up.
The overall feel of the song seems fresh and quite different from what I've heard in your library so far. I look forward to hearing some guitar solos and/or riffs in this song, to make it feel more lively.
There's one instrument in there i think needs to either be tweaked or omitted, and it sounds like a piano. I usually don't hear pianos in rock/metal. If it's not a piano, I still think it sounds a bit out of place.
I think the drums are okay, they just need some more punch to them. To give it a more upfront feel. Mainly the snares if anything at all needs real punch to it. I'd probably go even as far as to say that the kit needs a bit of reverb to help distance itself a bit more from the other instruments.
I think the bassline needs some more presence. I can barely hear it, to even note that there's even a bass player present.
Organ sounds awesome as always. That's perhaps the one thing that doesn't really need to be changed.
I wish you the best of luck with all of your future projects. This newest demo may not be perfect, but it certainly is good enough to note that it's a sign of better things to come!
Pull all the stops (pun-somewhat intended), Phyrnna! Keep up the awesomeness!
-FTA
P.S. as others have said, the name of the song has been used in the Final Fantasy series (I actually thought I was about to hear a cover myself), but you don't really have to change the title if you want to. Perhaps something a little less well-known like "Those Whom are Fighters" or "Enter the Fighters" might be an example of some alternates to use. It's probably a rare case that the name of a song is actually under copyright, though I could be wrong.
I understand the EBF series is heavily based on the FF franchise, but keeping the title of this song, or changing it is 100% up to you.