Does unlocking the triumphant reward track 18 times = unlocking the ascended triumphant hero armor?
Does unlocking the exotic triumphant hero armor in skirmishes npc = unlocking mist forge armor ?
When you get a Triumphant Armor piece (From the reward track) it will unlock the respective Triumphant Hero armor piece on the Skirmish Vendor (Both the exotic and ascended versions)
When you get a Triumphant Hero Armor piece from the skimish vendor (Regardless of rarity), it will unlock the equivalent piece for the Mistforged Triumphant Hero Armor. Keep in mind that Mistforged Triumphant Hero Armor have Rank requirement (Chest piece require you to be Rank 2000).
Yes for both questions
Ferguson's Crossing Mithril Squire (Rank 5001) - PvP Phoenix (Rank 72) - 30k Achievement Points
Exalted Kawagima, Calamis Fatima, Hanna Flintlocke, Suzuhara Suzuka, Sally Furious Ant, Sabetha Deadeye, Bjarl of Souls, Lilian Mistwalker, Kelvena Riverstream, Zallha Wildhunt
Thanks for the answer . Have a nice day