-ACC>Int>det>crit>speed>vit (this is my opinion I don't have data to back it up yet but I'm working on it) Vit goes above anything if you don't have enough hp to not get 1 shot by encounters.

-On titan if your team members will stand under titan when gaoled you can bane+Ruin1>Ruin2>Fester>energy drain to almost insta free them.

-Virus directly increases damage taken I haven't tested if applying dots with virus up first makes them tick for more the entire duration. I have tested with virus up while casting fester and see about a 50 dmg point increase.

-Virus also decreases enemy damage out

-You have Eye for an Eye. USE IT coordinate with your healers so you're not overlapping.

-You also have swiftcast raise. You should be the first one bringing someone back into the fight not your healers. This will come into play in many endgame fights.