'gamerscore' is gained by various things. every game has usually 1000 gamerscore points. usually you can get the points by playing campaigns on hard and things like that.
By playing games.
There are no avatar awards for Assassin's Creed II. Sorry.
yes i need them which games have them
no
Yes
Yes, they have tropies which are similar to the xbox 360's achievements.
If you have Xbox 360 and Xbox Live you can stream the broadcast for free or pay to download it in HD
no it wasn't. Xbox > xbox 360 > xbox one
See below for information- hope this helps :)
Achievements and avatar awards.
Yes, since halo waypoint is a downloaded application you would need xbox live to use it.
Gears of War was the winner of 30+ Xbox 360 Game of The year Awards. Including Gamespot, OXM, TeamXbox and GameSpy.