This guide is intended for hunters only. It is from a hunter's point of view and only discusses the role of hunters for each particular fight.
Lord Marrowgar will cast Bonespike (1 target 10 man, 3 targets 25man), impaling the target on spike. To free the targets the spikes must be dpsed down. His second ability is Bonestorm where he will Whirlwind around the room, damaging anything in his path.
From a hunter's perspective this is a straight forward fight. Stay at minimum range and group up with any other hunters. Keep Misdirects up on your tanks whenever possible When Bonespikes are cast DPS them down, that is your priority. When Bonestorm is cast try to avoid as much damage as possible by moving away, but make sure once Bonestorm concludes to form up with you other hunters again. Other than that just simply DPS Marrowgar to the best of your ability.
Lady Deathwhisper will be protected by a mana-shield which will need to be DPSed down to get her into Phase 2. While her Shield is up she will summon adds at regular intervals (only from 1 side on 10man, or from both sides and the back on 25 man). These will need to DPSed down as quick as possible. While you are fighting adds she will cast different spells on a chosen add to make it more powerful. She will either reanimate them (Reanimated Adherent 99% Magic resistance, Reanimated Fanatic 99% Physical resistance)or empower them (Empowered Adherent gains a shield and an AoE spell, Deformed Fanatic gains increased damage dealt by 100%). On 25man she will also randomly Mind Control a player during the first phase.
During Phase 2 she will cast AoE frostbolts which can be interrupted and summon Ghosts whick explode to cause AoE damage.
In this fight a hunter's job will be to DPS the shield down and help down the adds, paying particular attention to any reanimated and empowered adherents. Should any Fanatic become deformed ensure you misdirect it to a tank as quick as possible and it will become your primary target. You may need to assist the kiting tank by slowing the deformed fanatic using concussive shot and frost traps. Assist in Crowd Controlling any Mind controlled targets by freeze trapping them. Also make sure you communicate if you have become mind controlled.
In phase 2 focus your DPS on Lady Deathwhisper. If you are a Marksman Hunter assist in interrupting her Frostbolt Volleys. keep an eye out for spawning ghosts and make sure to move away from them.
Here you are required to DPS the Horde Gunship using the cannons on your own Gunship. These will become frozen at regular intervals by a battlemage on the enemy ship which will need to be killed to unfreeze the guns. the overlord will also summon adds onto the Alliance ship which need to be killed. Players on the Alliance ship will also be attacked by Axethrowers and Rocketeers.
Before the fight begins make sure you have a rocketpack and have it equipped, REGARDLESS if you are a gunner, jumper or just a dpser. It is always good to have one just in case.
If you are a gunner charge up the guns using Cannon Blast which will generate heat. Make sure your gun does not overheat. Aim at the rocketeers at the back as the shot will deal damage not just the ship but enemies as well.
If you are jumping across make sure you wait for the tank to jump first and pick up the overlord, then jump across and DPS down the battlemage. Then jump back and make sure you jump back before the tank.
If you are just DPSing (or inbetween jumps if your jumping, or when guns are frozen if you are a gunner), Focus your DPS on the Axethrowers and switch to the summoned adds when they spawn on the ship. wait for them all to spawn so you can Volley misdirect them to the tank, then AoE them down. Also avoid any rockets whilst on the Alliance ship.
Saurfang will channel power from his abilities, Boiling Blood, Blood Nova, Blood beast and Rune of Blood. Boiling Blood will be cast on a single target, Blood Nova is an AoE, Blood beasts are adds and Rune of Blood is a debuff cast on the tanks. Whenever these abilities do damage the charge his Blood Power. When his Blood Power reaches 100 he will cast Mark of the Fallen Champion on a random target. The Mark is DoT and when the target dies it will heal Saurfang for 5%.
For hunters and the rest of the raid it is important that all are spread out to avoid unneccesary damage from Blood Nova. keep an eye on ability timers to see when Blood beasts are going to be summoned. Place Frost traps close to the boss so that when the beasts are summoned they are slowed straight away. When beasts are summenoned they become the primary target. make sure you kite the beasts as they hit hard and charge Saurfangs Blood power with every bite. When your target dies kill any other beasts before switching back to the boss.