This guide assumes you kill MAMA in under 50 seconds (p1 break). The CC-distribution greatly changes depending on the speed the party is going.
If there is any doubt about the kill time, go with the PuG version. The following guide assumes you are following the proposed CC-Distribution.
There is an invisible hitbox in the center of the arena allowing you to gain enough adrenaline for one Decapitate with only two critical hits!
This build only works if you kill Siax in less than 55 seconds. If there is any doubt about the kill time, go with the PuG version.
Swap to your off set (axe/torch) and cap the circle. After you meet in the middle, continue with: