This is Fine

This achievement is a prime example of how bad Blizzard quality and attention to detail has gone down the drain over the years.

After banging our heads on the wall for a while and trying the most ridiculous ideas we finally managed this to work, so for any poor soul attempting to do this in 9.2.5 and after here's what we did:

1. After pulling the boss do not DPS him at all - the higher his HP is the faster the Sanitizing Field will fill up the room which is crucial.
2. After the two adds spawn, don't dps them and don't interupt them - let them do whatever they want to do.
3. Once the boss finishes the cast & starts channeling Sanitizing Cycle you have exactly 1 minute to stop it else the fight bugs & you will have to reset.
4. Once the runes show up - delay picking them for atleast 5 seconds - LET THE ADDS BLOCK THE CONSOLES AND THEN KILL THEM - we had this bug happen where even after inserting the rune in, it got bugged out & instantly returned to the player - even though you could put it back in again it seemed that the fight was already bugged & the boss would not stop his cast.
5. If you're holding a rune, stand in-between the little steps near the consoles - that's the furthest spot away from the console that allows you to put the rune in the moment you get the debuff (this exact spot on top of the delayed rune-pick up fixed the bug of the runes randomly jumping out of the console or not getting put in even after clicking the console).

That's about it. Just gonna leave a few more notes about how pathetic & buggy this is:

- After the boss casts Sanitizing Cycle - you have exactly 1 minute to do the achievement (or just to do the mechanic alone) - if one minute is up, no matter what you do, the fight bugs out - runes show 2 min debuff timer?Boss has a huge channel time?Doesn't matter - after one minute it bugs out.
- Since you have only 1 minute - it's crucial for you to not touch the boss at all - if you do not touch him at all - the debuff you need will reach the stairs (close enough to put in the rune) will be at 57-58 seconds which means all 4 players instering the runes have to be on point. An additional tip for this: The Sanitizing Cycle gives you the debuff around 1 yard further than the actual size of the circle so just keep attention to your debuffs.
- The most important part is to not touch the adds - we were so defeated after trying so many things that surely something as stupid as not touching the adds will not make the boss bug out right?The first pull we decided to totally ignore the adds and let them block 2 Consoles (after boss cassts Sanitizing Cycle the two adds will randomly block 2 consoles preventing you from interacting with them) is the first time the boss didn't bug out & we got the achievement. Previously even if we got lucky & didn't get the rune bug and still put all 4 runes faster than 1 min the boss kept bugging & wasn't breaking his cast.

Just soloed this achievement in 10.2 and can confirm there are still bugs with the encounter.

Summary of the achievement:
- During the encounter, the boss will cast 'sanitising cycle' and become immune to damage
- 4 orbs will spawn around him, each with its own colour/rune
- There is a console at the front of the room, plus 4 other consoles around the room.
- Clicking the titan console at the front of the room will reveal where the orbs need to be deposited - one in each of the other 4 consoles.
- During this phase, the boss will create a sanitising field on the ground that will slowly grow. This deals damage when stood in, but at level 70 this damage is negligible.
- The achievement is to ONLY deposit orbs into their correct console whilst stood in this ground effect, so you need to wait until the field grows enough to reach the consoles, so you can stand in it whilst depositing the orbs.

Now the bugs:
First is the Titan Console. When clicking on the console to see the position of the orbs, the positions are rotated clockwise by one position. It's best to just go by the order they appear. So first to appear is front left, second to appear is front right, third to appear is back right and fourth to appear is back left. It's not a big deal if you get the order wrong, just take the orb out and try another console. Just be aware there's a timer on the sanitising cycle phase.

Second is the Sanitizing Field debuff. Sometimes it will just drop off when moving near the steps of the orb panels, despite obviously standing in it. Always ensure you have the debuff before depositing and orb into the panel. Run back and fourth a few times if needed if your debuff falls off.

Third is the achievement or at least the tracker itself. There seems to be a bug where the achievement completion tracker won't turn from red to white, despite doing everything right. I purposefully wiped 3 times to this before the achievement text finally turned white. Others have said they have gotten the achievement despite the tracker text still being red, so up to you if you want to try it.

Hopefully this helps others!

Thanks to Esinar's comment, I was finally able to get this achieve. However, the encounter only has 1 actual bug, and that bug is the rotated symbol positions.

The symbol positions that are indicated by the centre console are rotated clockwise from their true positions (for some unfathomable reason). So you need to mentally rotate the indicated symbols anti-clockwise one position in order to know where the orbs actually go. So if the console is showing the "K" symbol in the front right position, it actually goes in the front left console, not the front right. You can tell if you've put the wrong orb in the wrong console by the fact that you will get stunned for a couple seconds. That's your cue to tell you you've done it wrong. If you don't get stunned, then you've done it correctly.

It doesn't matter if the visual of the orbs eventually disappears from the console after you've inserted it. So you have as long as the bosses cast time to get this done. Although worse case scenario, you can attempt it repeatedly by waiting out his cast and then waiting for his energy to refill so he starts the phase again.

What is not a bug is the fact that you will struggle to get the sanitizing field debuff. That is because you are over-leveled for the content you are doing. So the game is trying to apply the debuff to your character, but because you're probably doing this on a level 80 character and this is content designed for level 70 characters, you are dodging/absorbing/missing the debuff application. You can tell because if you look at your character portrait, you will see every time the debuff is attempting to hit you, it will say one of those things. It's basically no different to aggroing a mob in a low level zone and afk'ing while it attacks you and does no damage.

This means that the greater the difference between the level of the character you're attempting to do this on and the level this dungeon was actually designed for, the lower the chance the debuff will actually hit you (if at all). So there's a distinct possibility that you will have no choice but to use a lower level character to do this on in the future. E.g. I assume attempting to do this on a level 90 character will be basically impossible (stripping off all your gear won't make any difference).