Estimated hit points = 175K
Rampages frequently - typically 4 times/minute
Summons multiple a tumultuous storm to assist periodically
His hit is sometimes accompanied with a 2 second stun
For your map. P 1961.5543, -1022.0976, -455.2266, 240, 127, 0, 3, Zertuken_the_Unyielding_(Medallion)