It will probably be something like..... At wave 10 you get a piece of armor At 15 you get a gun But then you die. When you get to wave 10 and 15 again you won't get armor, but then you get to 20 and get another armor piece. So on and so forth until you hit the max wave limit in a play through,like 50 or something. Then you will get no more armor when you play it for the rest of the week.