All COD4 did was level the ground between good players and horrible players so the not so good were decent and the great were just great. all those perks and all those airstrikes and uavs ruined the series IMO.

I went from bad to pretty good. I would play single player and practice flipping the joystick to heads. Also, on multiplayer I would try to watch the better players and mimic them, if you notice you are constantly moving, hitting the A button to get behind walls.

To get better at the shotgun, stop using the chainsaw and machine gun. Just dont use it, then you will get sick at the shotgun.

I havent played the second one, but im sure it is just as scary.

But you can't go wrong with condemned, a platinum hit for only $20.

Condemned or F.E.A.R

I would go with Condemned or Condemned 2

What should really be done is....go back to COD1 or COD2 where there was no UAV, airstrike, or helicopter. Those three things ruined the game.