Talk:Nidus/@comment-68.119.52.243-20180320052412/@comment-2605:6000:5087:9B00:28C5:DCA7:8C08:B7CF-20180330173901

Rotation is not hard to comprehend. Each round is 5 waves/minutes/whatever. Rounds 1 and 2 are rotation A, round 3 is rotation B, and round 4 is rotation C. After that, it repeats from the beginning.

In defense: The first 10 waves are rotation A. Then, 11-15 are rotation B. And then, 16-20 are rotation C.

in survival: The first 10 minutes are rotation A. Then, 11-15 are rotation B. And then, 16-20 are rotation C.

If you don't get what you're looking for, it's easiest just to pull out after wave/round 4, which is rotation C, because the process repeats from the beginning there. If you leave and start the mission over, you're in the same place but back to easier enemies. Otherwise the enemies just keep getting harder. Round 5 is harder than round 1, but they have the same drops.