It is apparent that the developers were by no means trying to create a stealth game, but they were also not focusing on allowing the player to just run into a room, set the weapon to fully-automatic and just spray-and-pray your way through the game. What will be the key to getting through the war-torn streets and environments is the ability to use the enemies' cover against them. If there is someone crouching behind a car, blow it up. Got someone sniping you from on-high? Shoot at their feet until they fall out the window.