Without smart tactics or voice chat, the overwhelming amount of adversaries - which come all angles - brings your group for their keens. If the enemy doesn't see sneaking high on him from behind or his side, then he can not cry to alert his comrades nor is he going to use a chance to fire his weapon. Of course there's multiplayer and co-op modes to chew on, giving the gamer something better to look forward too when they complete the overall game.