There are 4 quests that you should plan to complete on this run. They are Off With Their Black Wings, Yulda's Folly, and Aberrations (this one), and Valkyrion Must Burn, which you will pick up after killing Yulda.
All of these are at 22.59. If you don't have coords, look on your Storm Peaks map. It is in the far west part of the zone, just above the "O" in "Valkyrion".
For Aberrations, you need to kill the Valkyrion Aspirants. The drop rate isn't very good, but they will drop the Frost Oil that you need to freeze the eggs. You will need 5 or 6 of the oils. Once you have them, head for the blighted pool. You will see eggs scattered around in bunches. The frost oil is an aoe thing, so you can freeze several eggs at once. Freeze 'em until you're done.
For Off With Their Black Wings, you need to kill the Nascent Val'kyr. They're all over the place. Can't find 'em? Look up. They're the glowing, flying mobs. If you really can't find them, stay put and they'll find you. (Or you're just in the wrong place).
For Yulda's Folly[, go to the house at 22,60 (just off the southwest corner of the blighted pool). Yulda is in there. You will also pick up another quest, Valkyrion Must Burn. That comes from a large chest that is next to Yulda, so don't forget to pick it up after you've killed her.
For Valkyrion Must Burn, head for 27,60. To the east of the blighted pool there is a sort of traffic circle with a blue flame. Just north of that are two harpoon guns that you can mount. Get on one and aim for the haystacks near the buildings. There may be only 2 or 3 within range, so you may need to wait for respawns after you burn them, but they respawn pretty fast. The only thing to watch out for on this one is the Nascent Val'kyrs may attack you while you're on the harpoon gun, so be ready to jump off and kill one or two of them.