Ulduar, the final frontier (at the moment). The bosses do not fall easily, but when they do the loot is the best you can get. This guide will outline how to take down every boss in the dungeon, having read the tactics it is up to you to take them down!
Ignis the Furnace Master (in progress)
Razorscale (in progress)
XT-002 Deconstructor (in progress)
Assembly of Iron (in progress)
Kologarn (in progress)
Auriaya (in progress)
Mimiron (in progress)
Hodir (in progress)
Thorim (in progress)
Freya (in progress)
General Vezax (in progress)
Yogg-Saron (in progress)
Algalon the Observer (in progress)
Full Naxxramas 10 gear required (ilevel 200).
Full Naxxramas 25 man/Eye of Eternity 25 man gear required (ilevel 213).
Note: Check out Eric’s Naxxramas Guide for help gearing up for Ulduar.
If you want to check if you are well enough geared check out WoW-Heroes or Be.Imba, these sites will collect character data off the armory and recommend the best instances for you to go to.
I will not post minimum stats for healers/tanks/dps as they are highly controversial and there are whole threads on the internet filled with debate about them. I recommend using the sites I linked taking into account skill level, Ulduar is very reliant on skill; more so than any of the other raid instances. I would also recommend talking to someone who knows your class and spec in game, and asking their opinion.
Ideal Raid Setup
For some fights it is useful to have people able to switch to a different spec (for example and extra tank is really useful on Thorim, while some fights can be done with fewer tanks. Generally I would advise the following:
5 DPS (2 Melee and 3 Ranged)
15-16 DPS (5 Melee and 10/11 Ranged)
Good luck soldier!