Talk:Orokin Void/ByRewards/@comment-25032533-20151010163355/@comment-91.152.249.58-20151010172221

http://warframe.wikia.com/wiki/Survival/Rewards

For interception and defense, everytime you are prompted to leave or continue, you have completed one rotation.

In excavation, succesfully defending an excavator counts as a single rotation.

All mission modes follow the same order for rotations (A, A, B, C) which repeats for as long as you can stay in the mission.

In other words, 5 minutes/5 waves/1 round/1 excavator is a single rotation. For example, 20 waves of defense would be rotation C, because that would be the fourth rotation and 25 waves would be rotation A again, because that would be the fifth rotation. The characters A, B and C are used to indicate the different drop tables available for each rotation.