Make sure you keep Shimmering Shield up when you're under fire, and you'll have ulti for days.
Combo goes Sub Assault > Cliff Racer > Heavy Attack > Steel Tornado (or repeat if not in execute range)
Use DB for AoE stun or as a finisher.
Do NOT permablock. Only block heavy hits or multiple attackers while you put up Shimmering.
EDIT: I ignored the tank part when writing this, but this is a very tanky build. You can't just sit around facetanking, but you will be able to take and put out a lot of punishment. I also forgot to mention, light attack weaving is crucial for proc'ing Ravaging.
Many thanks. With some adjustements I will be a bit more tanky but I like a lot your base for dps. I wanna be tanky but some dps too. I will go 5 h 1 m 1 l and sb/2h.