I am not sure if this n-stepping/lag glitching even exists as people are saying it does. I have seen a lot of videos of it and I see it all the time in my end to. Its like you lag for a second and then your dead. HOWEVER it always happens at the end of a fight RIGHT before I die. I have had many times where people have chased me down and been firing at me as I dodge and run away or even had long shoot outs with people that lasted a while till in the end there last bullet kills me. HOWEVER I do not see their last shot I just lag then dead. This is NOT lag glitch though this is a small problem with your client trying to catch up with the server side game.
The person on there screen has killed you and it registers to the server but your client has not yet received that information due to what I assume is small amounts of desync. Thus you lag for a split second while your client catches up to the server and though you seemed alive, it lagged then it cleared to you being dead in reality you were already dead the second you started lagging.
Desync will always be a problem in games like this more so in alpha then anything else seeing as I am sure they are FAR away from optimization yet of any kind. I am sure as time goes on it will get better and you will notice it far less as things get optimized.
I been around the gaming block a few times and from the video I have seen of people complaining about n-stepping and my own experiences of seeing this my self I think its nothing more then a small desync issue which I am sure will be resolved soon.
Lets use logic and reason rather then knee jerk reactions when we get killed in a video game. It goes a lot further in helping the games you play get better.