You have to
liberate first Outpost through a story mission before you are able to complete any Kyrat Fashion Week quests. When you done, there will have a green Elephant icon showing up on X:325, Y:384 (West side of
Kyra Tea Weigh Station Outpost). Enter the House and meet the guy who call himself Mr. Chiffon.
After the cut-scene, you can now play Kyrat Fashion Week quests. Kyrat Fashion Week quests can be found in some
Liberated Outpost or
Liberated Fortress (Total of 9 events through out the world). Here is the list of Outpost and Fortress if you want to do this quickly.
*** Spoiler - click to reveal ***Location (O=Outpost,F=Fortress) - Animal - Weapon
South:
Kyra Tea Weigh Station (O, X:346, Y:381) - Black Water Dragon (Demon Fish) - Explosives
Kyra Tea Terraces (O, X:392, Y:327) - Tenzin (Dhole) - Arrows / bolts
Shanath Breeders (O, X:381, Y:571) - Karkadann (Rhino) - Shotgun
Pranijagat School (O, X:346, Y:623) - Gulo (Honey badger) - LMG
Barnali's Textiles (O, X:445, Y:689) - Sky Tiger (Tiger) - Assault Rifle
North:
Keo Logging Camp (O, X:419, Y:755) - Shadow Leopard (Leopard) - Assault Rifle
Keo Gold Storage (O, X:440, Y:815) - Mad Devil (Wolves) - Arrows / bolts
Keo Pradhana Mine (O, X:695, Y:621) - Ghost Bear (Bear) - Shotgun
Rajgad Gulag (F, X:809, Y:788) - Thick Skin (Elephant) - Fire Only
Remember, you have to use
specific type of weapon to hunt the rare animal, if you kill it with other type of weapon (or a enemy kill it...), you will fail the quest.
Go to hunting ground and gear up (if you have the type of gun required you don't have to change your weapon), then reach the hunting area to kill and skin the rare animal. (Watch out in some quests there will have more animals in hunting area)
When you complete the quest (get some Rupees and XP reward), you will be able to craft a item to
Final level (Level 4).
Complete
3 Kyrat Fashion Week quests to unlock this achievement.
Here is the video to tell you about the detail (same as the solution above) and included 1 of the quest.