<Hadronox denied! >

Hi guys
I saw some people having problems doing this so i wanted 2 share my experience here
I just wanted 2 share strategy that i did few minutes ago and it worked perfectly
not sure if bugging game somehow but worth a shot
so we had dudu tank and i was holy pala
we jumped down from web bridge and pull Crushers and killed them one time so boss came and used web on doors
then we wipe and when we return inside crushers are respawned
we jump down again and pull only first crusher and then run down
so when we down the road we wipe along the way,and i use DI on my druid tank
he revives us and we pull boss
ez Hadronox achievement