I really liked the music, it fit pretty well.
There're some things that could probably be improved.
When these footmans got cursed, I think everything should go faster and I saw quite big intervals between special effects appear. If you would like to keep it like this, you could make these footmans run around or just run back saying something or shouting for help or screaming cause of pain, you know, it might be much more impressive.
When the Blood Mage casted something to make everything in black, it seemed quite out of effects. How about adding some filtring effects or smething like that to make it more impressive?
When that psycho blood elf, lol, caught that spear, he moved it aside. I must say that it happened too slowly, too slowly for sure. Making it faster, would be much better, watchers would not lose the impression and wouldn't stop observing the events and now I actually waited that spear to flew away. Also that special effect was at the same spot when it had to be on the spear. It looked ugly. I suggest you to use something like small arcane explosion on the spear and it might gone. It will look like some kind of energy stopped it, don't you think so?
Why you display these OMG!!? It looked weird and hardly understandable your point. As I understood, that's the reaction when he saw that giant spear? You should add a sound, I think.
Everything was okay and everything seemed serious until that giant spear showed up. I think the idea of throwing a giant missile it quite silly. How about throwing not one, but lots of it and normal sized? He just couldn't handle them all and die.
There was two of these mages? Because when he died, I saw blood and his corpse. You should add some kind of effect to his body to make it look like his own body has vanished and hide or remove it from the game in order to hide it. Then it might be logical that he didn't die. When I saw him dying, I believed he died, but when I saw him sanding behind that woman, it seemed weird because he didn't die at all.
When the mage started casting that Death Coil missile, it seemed out of effects too. How about adding some special effects to the caster and to the missile? It might really look like he is casting something, not like holding something.
Edit:
Hehe, forgot to rate. I will rate it by 3/5 because I think it's almost not possible to get such a quality that deserves higher rating than this, since this map was made for Speed mapping contest.