Saw

During the cut scene previous to fighting Pighead you watch him electricute someone in a circle cage. When you walk into the room where you start the battle go thru the metal door on your right and follow the path till you get to the metal cage. Flip the switch to deactivate the electricity and open the door. The pighead will follow you in. Run around him to get him away from the door close door. Flip the switch to turn on the electricity. Now watch pighead fry! Achievement Unlocked. I did this without even having to throw a punch or take any damage.

This is what I did. I used a nail bat which is made available in a gear-lock in a previous room. Before you trigger this mission be sure you have an explosive mine, trip-wire, and shotgun shells. You should have them; they're everywhere.

When you run in the main room that triggers Pighead to come after you, run to the door to the right and bolt it shut. He will then run around to the door on the left which has no bolt.

Before he reaches that door, arm the shotgun trap. Then place your explosive mine in front of the door. When he walks in he will be shot, then as he moves forward he will catch on fire and stumble around from the explosive mine.

As soon as that happens start wailing away as fast as you can while he's still out of it. He never took a swing at me and I killed him in less than a minute after starting the mission.

I hope this works for you; it was easy for me to set up and very fast. If he doesn't hit your mine you should start over and place it closer to the door to ensure he runs into it.

There are many ways to kill him, here is mine.

I also found the best way the electric cage was by far the easiest way to kill him. I have done both ways and the way shown on youtube is the hard way and it is very iritating the cage is thinking outside the box.

I found the best and easiest way to kill pig head is via the electric cage. I found it to be easier when piggy appears, run outside, turn the fuse to the cage off, So when you go inside you wont die, once you have unbolted the door, walk inside and wait for piggy to grab you. After you fight your way out of the grab with your thumb sticks, piggy goes mad and throws his arms up in the air. When he is having a tantrum you have around 2 seconds free. So you simply walk outside, close the gate door, bolt it up and hit the fuse.. No more piggy!

Achievement Hunter Video