I beat Brutal Legend, but the multiplier is </3 and it was supposed to be the highlight of this game? I don't think so.
You can build up an army, but the opponent can always wipe them out in seconds, ALL of them, so you're screwed.
Plus cheap players keep spam building the Fire Baron unit and bum rushing your stage, even if you use a strategy to defeat them that does work, the unit is so cheap to build that they can just send a constant stream of them and just wear you down every time even if you manage to defend against them, since you're so busy defending against the attack you don't have time to rebuild units.