This is a new mode which has just came out for MW3.
Now this is my first attempt at it more or less, but this would be useful for those which are interested in it.
This mode is like survival. But faster paced. You get combo points for getting kills, collecting tags and picking up guns.
When you get bigger combos, you get more perks.
You have 3 last stands, so you can die three times. And you have to get one kill so you get back up. If you lose the combo, you die (as in game over).
At x10 combo, you get sleight of hand.
At x20 combo, you get quickdraw
At x30 combo, you get extreme conditioning
At x40 combo, you get stalker
At x50 combo, you get steady aim
At x60 combo, you get faster health regen (it's very important)
At x70 combo, you get juiced.
While getting these combos however, you get some care packages, giving you points, sentry guns and even 'freeze combos'.
Sorry for the low quality of the video, and no speech. But it's more of a thing to show you what it's like.
Anyways, what do you think about it?