Yes.
Beast mode in gears of war 3 will a separate game mode in the game just like horde was in gears of war 2. In beast mode you will be able to play as the locust monsters such as the ticker and kantus
No.
Yes it is.
Gears of war Judgement there is going a mode that you can play as the locust horde like Beast mode but in multiplayer
you probably don't need Xbox Live for beast mode, just as you didn't need Live for horde mode on Gears 2
Beast mode is locust's only, no humans can be played in that mode. Horde mode is what you need to go on to play Clayton Carmine.
yes, you get to play with all of them in beast mode. Thank you
yes gears of war 2 is beast
Horde mode and beast mode usually do the trick, but Warzone is probably the best competitive game type.
You need to complete beast mode without dying. I believe you need a full squad to do this.
There is no death mode within Gears of war 3.
Beat Gears of War 1 on Hardcore mode then put in the Gears of War 2 game disk, it will unlock General Raam for Gears 2.