[snipes]

No it won't look like shit, just not as sharp. It won't be like playing Xbox 1 on the thing.

And yeah you need Xbox Live to play most games online.. sometimes they have free weekends and shit, but not too often. I think its about $40? per year. Your headset and stuff (as well as a free month, I think) should come with your 360.

The controllers are wireless.. don't know about the 360 itself though.

With the HD, yeah you can download games off the marketplace (like Geometry Wars or wtf), emulators to make it compatible with Xbox.

It should say on the box whether or not you can play online co-op. And yeah, GOW has that.

And it should come with all the accesories you need, as long as you buy the premium.