Talk:Vasto Prime/@comment-24.124.98.22-20141217040849/@comment-68.83.74.44-20141217103506

You understand its not the number of waves you do but the which wave you do. The parts drop in rotations. I.E. Rotation C is usually the twenty minute mark survival and 20 wave mark for defense type missions. Because of the way rotations work you only get rotation C once every 20th.