In the first part, lure him into the actual poles of the fence. When he flies away and lands dazed, attack him from side and watch for the "Strike" message to appear. Later when he starts jumping, jump to avoid the shockwave and try to get him to jump into the electric beams. He is weak after he jumps. He will stand and send a series of shockwaves. Also jump over these. If he is on one side of the "ring", run to the other side to avoid them. Watch out for the gas. When his health is gone, you must to finish him with a strike. Note: Beware of gas and watch your bar for your sickness level.