I finally killed Titan HM with pugs.
This is the video of the fight, it might be helful for someone is a MNK PoV, anyway i accidentally deleted the first part of the video before the heart, so in order to show that phase i just went inside again and recorded the first part with some other ppl, sorry for that :l
https://www.youtube.com/watch?v=G-lbEnF9h8s