I'm a fairly new player and this is my first character that didn't come to an end in the western teir 2 dungeons. I seem to enjoy suffocating in the sandworm lair. I've been down to 0 lives since... maybe the sandworm lair

Here's the character:
http://te4.org/characters/22278/tome/71 ... 70fdb9c455
The character has just completed the spider quest, the naga cave, and now the vor armory in the east. I'm considering going to one of the prides next I guess. Or better to go after the resonating diamond?
Any advice about loadout/talents is welcome.
I'm currently working on greater weapon focus and piercing sight. Maybe do shield expertise or shield pummel after that. I'm at the bottom of the barrel in the general talent tree, in my opinion.
Things get scary if I run out of shields+healing, although this doesn't happen much. Resists are pretty weak, but there hasn't been much good gear in this department. Rush, step up, blinding speed, and the movement infusion provide good mobility. Psionic grip is good too. Damage output hasn't changed appreciably since finding the current weapon (on tempest peak?). The character can deliver about 1000 damage with an assault.
There was a very very close call in the orc ambush when leaving dreadfell. Ran out of shields+healing and hit ~100hp.
Does the ring of the dead need to be worn to help with that thing that can happen to my character?