From Comic-Con coming new gameplay video amateur Beast Mode on the Gears of War 3. In the first movie we see what can make a Armored Kantus: fitted with a double gun Boltok is capable of performing somersaults shorter but can also deliver a punch to the ground, with a potency similar to that of a berserker. In the second video, however, we can see the menu, probably temporary, Gears of War 3 and the name of the multiplayer map shown so far, "Mercy." Before beginning the game is displayed for a few seconds the structure of the map so the player will lose and we can see the boomers Butcher in action.

Gears of War 3 - Beast Mode Gameplay (Armored Kantus)
Gears of War 3 - Beast Mode Gameplay (Menu and Butcher)