The Witcher 3 Wild Hunt Viper Armor Set Guide, all pieces [PS4 - Xbox One - PC]
In this new guide dedicated to The Witcher 3 Wild Hunt we see what they are and where they are all the pieces of armor.
Viper armor piece guide
In The Witcher 3 there are 4 different sets of armor:
The missions that concern the finding of the pieces of armor are those called "Treasure Hunt" and are activated by finding one of the pieces of armor or the clues that lead to these pieces.
This armor is made of only 2 pieces and, unlike the others, it cannot be upgraded in any way. Collect the pieces to start the hunt (no need to start a real mission, go directly to the place shown in the video)
For other armors follow the dedicated guides that you find collected in the tricks and guides tab of The Witcher 3 Wild Hunt.