Call-of-duty-ghosts

: Do not enter the room immediately. Stay behind the doorway for cover.

: Save all your flashbangs and frag grenades specifically for this room. call-of-duty-ghosts

: Throw everything you have into the room to clear out as many enemies as possible before they can react. : Do not enter the room immediately

To unlock this achievement (Gold Trophy / 100 Gamer Score), you must clear the common room in on Veteran difficulty without taking any damage. call-of-duty-ghosts