Clear pyramid to start ring pull rock formations. AoE can be used to clean house. (4) sets of formations spawn and about 15 formations per set. Each on on differant side of Rock Monstrosity.
Pile of rubble spawns x 4 kill each on by itself and it will go back to 100 percent health and walk back to its spot. repeat this 4 times
pull and kill rock monstrosity.
6 waves of 4 rock heaps will attack... kill em all
similar to all the other PoE-a events, just kill everything, more stuff spawns, kill those and more stuff spawns, kill those and more stuff spawns, pop rock monstrosity, more stuff spawns, etc.. pop Peregrin. Approx 100-120 minutes from start to finish.