He hit you for 7667 when you died, I cant see if thats a crit or not, are you defense capped? Id try using divine protection during that beserker stance phase to lower his damage.

Other than that my advice would be that HoL isnt that easy even when you first hit 80. Your dps looks a little low also but that may just be because I am used to seeing shaman bloodlusted numbers during boss fights like that.
It may be hard but the other option is to sheep the adds and kill the boss first.

Hope something I said was helpful anyway