Guild Wars 2

1)Best way to clear this achievement is on story mode so that you don’t have to waste time trying to be lucky to get this fractal.

2)Need 4 cooperative person and 1 person who never completed story mode since you cannot start story mode once you’ve completed it.

3) Max stacks before exploding is 19 stacks

4) Switch off auto attack so that you do not hit 20 stacks by mistake.

5) Only way to increase the stack is during the shield(invulnerable) phase.

6) Assign 1 person to carefully bring the stack to 19,others stop at 10 stack or 15 stacks depending on how well their control of dps is.

7) Bleed counts as stacks so do not use an attack that bleeds

8) Control or deactivate your pets so you do not attack accidentally

9)Practice the 19 stacks throughout the battle so you get the hang of it at the end.

10) Bring down the Champ Ooze HP to around 3~5% and stop dps,wait for shield stage.

11) Kill smaller ooze to stop them from healing the Champ Ooze

12) Once the champ ooze is at 3~5% hp, and has 19 stack,wait for it to start attacking, once it does,you can finish it off.

13) The 19 stack will start to decrease but you can still get the achievement when u kill it as the stacks is decreasing. Confirmed by my team when we kill it as the 19 stack was decreasing to 17 stack.

Pictures to back up my confirmation.My thanks to the party members and good luck to fellow achievement hunters!

Oh, you have to get it at 19 stacks? When the team I was on was trying it we were getting it to 20.

Are people making groups for this achievement? I’d like to join one.

it explodes on 20 stack and does massive dmg,so max stack before exploding is 19.
Just type in the internal LFG system for the specific achievement so you can get people with the same interest,but u need to have at least 1 person who can open story mode

It doesn’t explode at 20, afaik. He reaches 20 and after that, every attack against him will trigger an explosion.

I could very well be wrong.

Yes, you can get it to 20, but every attack @ 20 stacks will cause an explosion.

So the question is should you stop at 19 stacks, or 20 without attacking after that?

19
We couldnt get it with 20.

subject 6 just needs 19 stacks in generell in this fight. you dont need to kill him while he has that 19 stacks.
i got this achievement killing subject 6 with 0 stacks, but he had 19 stacks before.

My group got this achievement without even attempting to :S
Just saw the thingy flash up in the bottom and had a look to see what it was.
I’m still not entirely sure I understand how you get the achievement…

Tried it with 19 and with 20 stacks, no achievement.

I’m going to form a team to do this on NA now if anyone wants in.

Took us 2 attempts but we were able to get it. On the first attempt we got him to 19, and he did hit over 20 1 time. This attempt failed.

After that we tried again without letting him hit the 20+ point and it worked fine

He can explode any number of times. Just make sure that last shield phase before killing him, he goes to 19 stacks exactly.