Set:
Willows Path (5x)
Permafrost (5x)
Engine Guardian (2x)

The idea is to push your regenerations as far as possible. Stats and enchantments are LP.
Your damage comes from your sunshield, the more enemies are beating you and the higher your life total ist the more damage it deals. :-)
If things are fine, your rotation is:
Shielded Assault >> Sunshield >> Solar Barrage >> Puncturing Sweep >> Solar Barrage >> Puncturing Sweep >> ...
Avoid activating a new Sunshield before the old one expired to deal its damage. Before ulting use Solar Barrage to boost it. Remember the ultis damage reduction is more effective the foes there are. The same is true for Sunshield.

1st Bar (Sword and Shield) is about tanking. The 3rd skill you can replace with the taunt from sword and shield if you are doing group things. Try to keep at least one shield active to get the LP-Reg boost from permafrost.

2nd Bar (Healing Staff or anything you like) is about support. Here you find Buffs and Healings. Use it carefully, to many buffs and heals and to less damage/taunt can kill you/your group, but some might be usefull. You can replace them as needed by others. If you want you can build a damage Build here or whatever you like. The tanking should work well without many weapon swaps.

Enjoy playing and give some feedback :-)