lets begin our review by analysing mood and atmosphere the song presents to the listener.
That intro, I think really proves useful to usher in the song, it makes the mind sit into the frame of "triumphant" battle, and by doing that at the beginning, whatever melodies you threw at them later, they would somehow find a way to stick to the battle image.
I'm seeing a rather light hearted fight to this piece. Like a group of young whipper snappers are going to slap around some jelly monsters... those pansies!
This image is nailed home at 1:47, though that sad melody that happens around 1:56 makes me think that the jelly has proven a much more difficult task then they had imagined.
Thats what they get for using wooden swords... idiots...
It's a great and long piece, I definatly enjoyed listening to it... again... and again... and again once more :D.
Enough about that, lets talk abit about instruments and melody.
There is a great deal of diversity in the piece, constantly jumping and shifting, of course, during the whole time it finds itself without digressing too much from the original feel, which is of course a pretty important element in the song.
You also managed to use a lot of instruments without clashing into each other. I know for a fact how very incredibly difficult that is, so kudo's on accomplishing that pretty well.
I don't think I have any ideas on what instruments to add or remove, I think this song was plenty diverse instrument and melody wise.
Really that's all I can say, great stuff, keep it coming.
5/5 from me Bezo, keep your chin up, fighting spirit strong, and keep them coming ^^.