This unlock is achieved by examining a chain, labeled "Manacles of Wrought Iron," in the ruins north of Chapter 3 camp. The chains are located on the right-hand of the ruins obscured by a twisted tree, it's behind, well hidden. Location is (14530, 47785).
This unlock is achieved by examining a banner outside the south side (facing the lake) of the tent containing Kerryn Darkwater, in the Mistwood camp, in Chapter 2 of the Dark Elf storyline. The location is approximately (12808, 32731).
The Witch King
This unlock is achieved by examining a banner (Dark Elf Gonfalon) on the east side of a big tent by the sea in Eranneth, on the far side in high elf territory. This one is one of the hardest to get as you have find a way to drop down from the cliffs and avoiding the order guards nearby while getting to the other side. The location is approximately (60170, 40040) Note: Higher level characters can get to this location by leaving the War Camp in The Blighted Isle (avoid going into the RvR zone) and swimming north, close as possible to the Destruction side. There will be one spot around 29k,49k where the "countdown" will start, just keep going forward, hugging the Destruction cliff, and you will pass the spot, and never turn into a chicken. Swim up and around the RvR zone, and up on the land on the order side when the cliff lowers to shore. Just avoid the town there and cut across the land to the east, to the northern part of the island for the unlock.
This unlock is achieved by examining a "Defiled Body" in the Northeast corner of Mistwood past the Mistwood Grove PQ (Chapter 2), on a peninsula surrounded by cliffs and guarded by Griffins called Dreadtalon Guardians. The body is near one of the nests hugging the edges of the cliff and the location is approximately (33854, 27488) Note: Beware of the Champions (Rank 4) in the area for those who want to get it early on.
Dark Elf Treachery
This unlock is achieved by examining "A Discarded Message" on the ground on the opposite of the Spires of Narthain PQ (Chatper 1). Find it next to on the west side of a series of worn short walls and burnt trees, right next to a destroyed bolt thrower close to Isha's Garden. It is in the same area that the parchment quest is, which can make location difficult. (8371, 20506)
Black Arks of Naggaroth
This unlock is achieved by standing on the ledge, overlooking the Black Ark, to the east of the Black Ark Landing camp. The location is approximately (10336, 8913)). It is only available while on the quest to get this particular unlock.