Help With Sactum Cay run

Hey all

l have been doing the Sactum Cay run with good success... i can make it to the vizier 99.9 % of the time and i can survive the dock against the healer boss (Selwin) and the ranger boss (Edgar) however the mesmer boss (Irwin ) is another story. i gave up using mending and balthazar's spirit together because he just shatters them and then drains my energy (...only 20 pts i have knights set). well im still using balthazar's just not mending. i've switched to using dolyak sig. along with healing sig. no energy costs. i beat him once any other suggestions out there.

my build:

sprint
bonetti's
healing hands
heal area
heal sig
sheild
dolyak
balth's spirit

Drop the full knights set, you only need one part to get the benefit and take gladiators.

Use this build.

"Charge!"
Sprint
Endure Pain
Balanced Stance
Heal Sig
Shield Stance
Dolyak Signet
"Watch Yourself!"

Just tank at the end with Dolyak and "Watch Yourself!", using Heal Sig when necessary, chain your stances so that you have a constant stance on to activate your shields bonus.

14 Tactics, 13 Strength (doesn't really matter which way around it is, my tactics helm is dyed green so I find it easier to fine in my bag).

Healing Area is to heal the Whitemantle surrounding you?
Drop the monk skills all I have to say.
And do not get surrounded. I actually picked up Riposte and Sever to get rid of some pesky knights and savants.
Sprint is more than enough IMHO so get something to annoy the NPC's.