Utgrade Keep: Easy
Some might say this place is easier then the Nexus, some say it’s a minor step up because of the final boss. In general it is a very easy instance.
Prince Keleseth
A easy boss for DPS, can be difficult for a tank. He spawns adds that can reduce movement speed and Strength. The tank needs to hold threat on the adds while DPS kills the adds and the boss. Best to bring classes that can AOE like Mages, Death Knights, and Warlocks. He also freezes one person in a tomb where you are unable to move. Other members of your party can get you out by breaking the tomb with their attacks and spells. Healing this boss can be a little difficult as you have to heal the tank and anybody who is in the Frost Tomb.
Skarvald the Constructor
A very easy boss, but the tank has to tank both monsters. One is a Necromancer who will summon skeletons to do his bidding. These must be DPS down as well as the Necromancer. If Skarvald dies and the Necromancer is still up within 5 seconds the Necromancer will resurrect Skarvald in a form of a ghost. While in this ghost form he can not be targeted, but he can do damage to you. This goes the same if you kill Skarvald first over the Necromancer. If you remember the Romeo and Juliet fight in Karazhan this is just like it.
Ingvar the Plunderer
Depending on your group makeup this boss can be extremely easy or extremely difficult. He has two phases and each phase he does a good number of attacks that can hit you very hard. In phase one he does a spell called Smash that can hit anybody for over 18,000 health. Lucky for you he casts this and you can move or interrupt him from casting this. He also does something called Staggering Roar in which will silence all casters for two seconds. Other than those two spells just DPS him down. Once he dies he is resurrected and this is when he becomes a pain. While the resurrection is going on you can not eat, drink, or rest. This is a perfect time to use a potion if you have it or a health stone. Also note hide behind a pillar during the resurrection. As soon as he gets up he does a spell called Dreadful Roar that will silence you and hit you for over 4000 health to anybody who is in the area. The pillars negate the damage he does. Finally he throws a Shadow Axe at a random group member. This is unavoidable and it is best to stay away from any other players while this is going on. If you can ignore all that then the boss is easy enough and you have a chance to get some good gear from here.