I've run VoN 5 at level on elite probably more than a dozen times. Three of those times the end fight drug on for a long time and eventually wiped. However, by stark contrast, the majority of times I've run the raid the end boss of part 5 dropped so fast if you blinked you'd literally miss it.
I'm not sure what gives. One of the failed raids I was in was quite a long time and was lead by someone else. There wasn't a healer and I was on a sorc wand healing and rezzing people with scrolls. The end fight went on for well over 20 minutes until finally it was mutually concluded that we just didn't have whatever it took to take him down.
The last 2 wipes were this week, with me leading the raid. In one we got to the end fight without much trouble, but it turns out none of the melee had adamantine weapons and the arty didn't have that spell. Soon as we wiped we went right back in, and the arty picked up adamantine weapons. I also was way more conservative with my mana getting to the end fight and I was able to get off several disintegrates, but in between casts I could definitely see the adamantine seemed to be doing the trick. Boss was dead in about 1 minute.
So last night I'm leading another raid in there. I'm on this really dumb experimental toon I'd made a long time ago and haven't deleted because it comes in handy from time to time running with guildies. It's a 2 rogue 9 wizard, with insightful reflexes and a trap save of about 30, which interestingly enough isn't even close to being able to always evade the traps in the lightning hall.
Considering what I know from the past, I made sure most of the melee had adamantine before we got going. We get to the end boss, I figure it's going to go smoothly because the melee have DR breakers, but it doesn't go smoothly at all. I never saw the boss's HP drop below 95%. The only time it even dropped at all was when 4 or 5 melee got him cornered and beat on him for like 20 seconds uninterrupted, but then dogs came and it went pair shaped and the rest of the fight nobody could hurt him as fast as he was able to regen, let alone take him down.
I felt really bad about that raid, it was a fun group of people, and I feel like as their raid leader I let them down. Several people wanted to go back in when it was all over, but it was real late and I was far too tired, plus I was absolutely frustrated with my horrible rogue/wiz. I said look out tomorrow night and I'll try to host it again. They said they had fun, and I totally did too, but it would have obviously been a lot more fun if the boss had died.
So I'm here asking if someone knows a good strategy for the end fight. The wiki and several guides I found online pretty much say use adamantine weapons, sonic resists, ignore the dogs, and kill him. That does seem to usually work, however, 3 times now that strategy was a complete failure.
We tried killing the dogs, but they seem to come right back within a few seconds.
We tried kiting the dogs, but that was an after thought, so we weren't prepared or organized about it. The kiter had trouble getting all the dogs, and usually died pretty fast anyway.
Any tips are most appreciated. I've never run the raid on a melee toon, I'm going to try to get one in there to see first hand how it works.