How to unlock the Sniper Wolf costume for Quiet in MGS V: The Phantom Pain

There is a variety of costumes available for Quiet in the game. But even with the variety people still likes her to play with the costume that they have seen in trailers. An Optional uniform 'Sniper Wolf' can be unlocked in the game. This Guide will help you how to unlock the Sniper Wolf in MGS V: The Phantom Pain.

How to unlock the Sniper Wolf
To unlock the Sniper Wolf costume, you need to complete the Mission 40: [Extreme] Cloaked in Silence. It's not that easy as you think as the difficulty level is Extreme you need to be more careful. Here are few tips you need to know before you start the mission 

Tip 1:
She can kill ou with one-shot so we recommend to keep changing you position(Do not run around).

Tip 2:
After you shoot her keep a mark on her so you know where she is actually moving.

Tip 3:
Shoot her one time and change the cover. Keep repeating this process.

Tip 4:
Timing is most important. Make sure you let her use her attack first and when she take her time to reload, you shoot her.

How to complete Mission 40: [Extreme] Cloaked in Silence with S-Rank
Unlike mission 11, where you used supply drops to defeat her. This time it'll be more tricky as she jumps away at the last second, you'll be needing a sniper rifle this time. Hold the Sniper Rifle from the start position, aim her from the cover and let she shoot at you first because as she fires at you have 2 seconds time before she fires the next shot, so take you best aim and shoot her. 
Alternative Approach:
Place 4 sleeping mines at one of her sniping spots down in the ruins(During 4th mission task). Simply wait for her to run into the mines and rest will work itself, this could also bring you an early win.

After you complete the mission you can check the costume unlocked in the options. Enjoy....