I ran Ulduar on my warlock yesterday, and had success for the most part. I’ve never been there before, so the mechanics were all new to me. I started out on 25-man.
Flame Leviathan took some research to figure out. Outside of a vehicle, I wasn’t able to do much to him before he took me down, but after looking at some YouTube clips, I set a few Demolishers up and he went down very fast.
The rest of the fights were fairly easy until I got to Mimiron. All the individual pieces went down easy enough, but the combined unit was too hard for me to get all three segments down fast enough. I switched to 10-man and it was pretty easy.
Hodir also gave me a little trouble, so he was done in 10-man as well. I though Freya was going to be impossible, but after a long while her health started dropping quickly and she went down.
Yogg Saron was something I haven’t figured out yet. The insanity mechanic takes me out in the brain room, so I’m not doing something quite right, and it will take me a few more attempts to get it.
Earlier in the week I beat Lich King on 10-man pretty easily.