A friend of mine had Breakdown and it was pretty sweet. First person beat 'em up is the simplest definition for it, but it was more than that.
That's a good definition, despite the fact that you DO make use of weapons in the game. You must master the mechanics of fighting to beat the main common enemies of the game, wich are immune to bullets. They´re just a training for you to be able to have two epic fights with THE main enemy of the game, but 'till then, you'll get your arse kicked many, many times. Basically, you fight the T'lan Warriors with your fists and feet ( yes, you can kick and spin around, just like the trailer ), and kill the enemy soldiers ( human ) with guns, but you can beat the crap outta them with your fists too if you want.
You learn to fear the T'lan warriors in the beginning of the game because you just can't fight or shoot them, the thing you will hear often is "DERRICK, RUN!!" and that's the only thing you can do for now. Every time you see one of them, you´ll crap your pants and run like hell to find a way to escape. But at certain point, you will discover you can fight them, and that's when you will learn how to do it. But at this point, they're still strong as hell and will kill you very quickly. It's when the game becomes a little frustrating, because you will die a lot, even fighting well, cause very often you won't be fighting one T'lan Warrior, you will meet at least two, and even four or five at the same time. It's a mess... They literally beat all the crap out of you, mercyless. Then, you'll start to HATE them.
All this frustration has a purpose... They made it this way for you to hate them with all your guts, because later, in the game, the time for revenge will come... and that's when you'll see yourself beating the crap outta THEM.. And man, what a PLEASURE... Never revenge in a game was so sweet...
Anyways, i'm writing too much... It's because I really enjoy this game and never miss the chance to recommend to everybody I can.
Believe me, you'll agree with me when you beat this game.