Here's my barb, any tips? It is almost impossible to solo in hell act 2. Group play I'm really gimping the group.
This is about where it starts getting difficult for barbarians. It only gets worse from here though. Eventually hell be comes very doable. I can't figure out how to make it work in inferno though and it doesn't seem like many other people have. I've read some people on forums with 60k hp, 70% resists getting wrecked. Where you're at, you need to start sacrificing damage for health/armor/resists but it seems you went a bit too far. You really want to be around the 6-8k range. By the end of hell I was dealing close to 11k.
The skills are kind of personal preference but these are what I think are important)
Ground Stomp: Wrenching Smash (enemies are pulled closer, larger AoE)
Revenge: Vengeance is Mine (8% max health for every enemy you kill)
Ignore Pain: Ignorance is Bliss (gain 20% of all damage dealth as Life)
War Cry: Invigorate (increases max life by 10% and regens 310 life per second)
Passives:
Inspiring Presence (1% of maximum life per second for 60s when you shout)
For harder areas (inferno) I run seismic slam with stun. ALWAYS use seismic slam first in this case to stun them THEN ground stomp after. The reason is because you want to expend the fury you have before you collect more. Doing it this way gives you an extra 1-2 seismic slams instead of wasting gained fury by topping off your reserves.
In enemy dense areas, I used whirlwind with 1fury per enemy hit. You can actually sustain whirlwind for a very long time if the area is dense enough. I would basically do ground stomp -> ignore pain -> whirlwind to recover health. It deals pretty good DPS as well.
You definitely want revenge. If I'm honest, I didn't start using it until Inferno but it is a really good skill. The only thing that sucks is that sometimes you'll die before it activates and even if it does you might not pull off the hit well enough. Ground stomp here is important because you can pull multiple enemies and revenge them at once so if you see it activate always try to go ground stomp->revenge since you'll get 8% of your health back for every enemy you hit.
I would drop nerves of steel in favor of armor with more +all resists. The scaling on armor is really bad. I was only rocking ~3k armor at the end of nightmare and still only having 5-6% less damage reduction than you but at the gain of an extra ~7k dps.
For passives, I think inspiring presence is pretty good. I found that being able to regen health fast helped the most in hell. It's about the turning point for me in that difficulty because I was able to run away while letting all my cooldowns clear and then come back to the fight with close to full health. This is why I'd go with Invigorate for War Cry as well.
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As far as primary fury generation goes, I've used all 3 (bash, fury, cleave) with success. It kind of depends on what weapon your'e using. When I would dual wield, I would use fury mainly because you pick up the fury charges a lot faster and it's good in combo with ignore pain to regenerate health if there are only single targets near by. I would use stun with both fury and bash. I used additional fury for cleave (mainly for cleave->whirlwind combos in dense areas)
Hope that helps. If you figure out inferno let me know lol