A Complete Circuit

Just for anyone else who wanted a clear and simple breakdown of which conduit is which for the achive:

-North Conduit: Static Shock
-East Conduit: Diffusion Chain
-South Conduit: Overcharge
-West Conduit: Bouncing Bolt

The conduits are located in the corners of the squared platform Lei Shen is on. 1 conduit can be charged at a time, by placing Lei Shen near the conduit. This way the conduit gains charges and deals more damage when the fight progresses using their unique abilities. During the first transition phase (at 70% health) Lei Shen walks to the middle of the platform and starts to charge all the conduits. The conduit with the most charges (e.g. where Lei Shen stood the longest next to) will get overcharged and disabled. The quarter of the platform next to the conduit will be covered by lightning.

For this achievement you need to kill Lei Shen four times by disabling a different conduit first each time.

Imo there isn't a good explanation of this achievement anywhere so...

You have to kill Lei Shen a total of four times to complete this achievement. To complete each part of this achievement, the conduit that you plan to "disable first" is the one you start the encounter at. I know a lot of people might be like, "well no ^&*!," but I want people who are nervous to have complete faith that they won't have to worry about messing up and running the place all over again more than they have to.

Lei Shen's platform consists of four corners. Each corner contains a conduit. Hover over the conduits with your mouse to see their names. Every 10-15 seconds Lei Shen will teleport to a different conduit while he isn't engaged. Find the conduit that you want to disable first for your achievement credit/progress and stand by that conduit. Eventually Lei Shen will teleport to that conduit and you can hit him to begin the encounter. Keep him by the conduit and DPS him SLOWLY. I did this in a group with one other person and we decided to DPS him to around half health and then stop.

Eventually he will teleport to the middle and become un target-able. When this happens, lightning stuff and adds will spawn, just kill adds and wait for him to become target-able. I would go into more detail about the mechanics, but at level 110 you shouldn't have any trouble so it doesn't matter. Eventually, he will become target-able again and you will see a message pop up in the middle of your screen that says something like "The conduit has burned out and caused [Overloaded Circuits]." If you want to make sure you did this correctly, track the achievement on the side. When done correctly, if needed for the achievement, the conduits name that you started at should turn from red to white on the tracker. At this point you can just kill the boss.

If you are with other people and get knocked off the platform and die, do not fear, you will still get credit. I know because this just happened to me.