Playable segments of the game we’ve seen so far have taken us from cold to sweltering (abseiling down a Soviet mountain range one moment, storming through the Vietnamese jungle the next) and from high to low (commanding ground troops from the air in a section which play almost like a strategy game one moment, crawling through an underground catacomb filled with rats and assassins with only a torch for company the next). There certainly isn’t much time to stop and moralise or wonder what’s for dinner. The tunnel sequence, for some reason, made us think of how emotionally dark Treyarch’s previous Call of Duty, 2008′s World at War was. That game’s