I found out last night a few glitches and cheat. I for one wont be using them but i can pass them on.
On wasteland if you go into the radiation field there is a burnt out car i have been told if you run there and drop a tactical insursion after 3 deaths you become imune. from there you can get on top of the car and snipe the entrance to the middle of wasteland. where people run through the middle through 3 entrances.
On karatchi you can hide in the hummer / convoy cars and snipe now if you get shot it dont get you as the vehicles are bullet proof and you attain this.
On top of this anyone know the care package glitch i would like to avenge the americans by playing them at their own game. any other helpfull hints tips please add to this post.