The map started off fast, with the two elemental lords engaging it battle. The characters weren't developed beforehand, so it seemed they were just fighting for the sake of it. The battle's scripting was done terribly, with special effect spam, and boring camera work. For a large part of the cinematic, characters were standing in one position, waiting to be struck by their foe. Having characters dodge a few attacks would've been a lot better.
After the arrival of the pit lords, the cinematic became even worse. Apparently the magma lord is unable to turn around, despite knowing the pit lord has just vanished. I for one, would at least take a full 360 degrees look. He's also deaf; being unable to hear the pitlord running behind him. I'm sure anything that size would make a lot of sound when it moves.
The dialog was probably on par with the rest of the cinematic, which isn't a good thing. Grammatical errors and unrespectable dialogue are not exceptable.
Rating: 1.4 and not recommended for approval.
My Recommendations:
Improve the description of the map.
Remove such obvious flaws based on pure logic. This includes instances such as the immobility of the characters, and the illogical actions of the magma lord.
Improve the camera work. It definitely needs more movement. Because of the lack of any form of character development or worthwhile dialogue, the camera work takes a large role. After all, battle cinematics are about the action.