While playing today, every time that I died was from a headshot. There must be a biggggggggggggg problem in the Beta testing regarding this. There's no way that some nobodys would be able to headshot me that many times in a row without missing a shot. Just unbelievable. Also, I have to say that the weapon choices are poor again, as are the easy ability to get headshots. A headshot should be a one shot kill with a sniper rifle and not any other gun, which the developers didn't seem to realize. It makes the sniper obsolete. Just use a pistol or a battle rifle for that. I'm just extremely disappointed with this game (even though it is in the Beta stages), since it took everything I hated about Halo 3 and hyperbolized it.

Maybe you were up against good players, I haven't had any problems with constant headshot kills. Also I think they fixed a lot of the problems that Halo 3 had.