The Feline Witcher Gear Set can be found in Novigrad (Scavenger Hunt: Cat School Gear). It consists of 7 pieces - 5 armor pieces, 2 swords and 1 crossbow. Simply collect any of the pieces to start the treasure hunt (you don't need to accept a quest anywhere, just go to any of the locations and pick up the diagram).

• Recommended Character Level to wear the Armor: 14

Feline Silver Sword

At the ruins of Est Tayiar in the eastern part of Velen, descend through the large hole in the ground to the tunnel beneath. On your right is a wall that can be destroyed with Aard - behind it you will find a skeleton with the diagram.

Feline Steel Sword

Enter Drahim Castle, south of Novigrad, and descend the ladder to the lower floor. There you will find a chest containing the Steel Sword diagram.

Feline Crossbow

Off the western coast of Redania (south-west of Novigrad) is a floating shipwreck near an island south of the lighthouse signpost. Climb aboard the ship and descend into the hold to find the chest containing the diagram.

Feline Armor

Facing the tall tower on Novigrad's Temple Isle from the south, head down the switchback road and along the western cliffside behind the houses to find a path leading down below the tower.

You'll come across an Illusion, which you'll need Keira Metz's amulet (acquired during the main quest Wandering in the Dark) to pass. Inside the main chamber is a Golem - defeat it and follow the steps up the path on the left-hand side of the cavern.

Climb up to the next chamber to find several statues surrounding a large area. Kill any Wraiths that may appear and rotate all of the statues so that they face inwards. Once the floor opens, eliminate the drowners and swim to the bottom of the cave to collect the Laboratory Key from the skeleton and return to the main chamber.

Once inside the laboratory, you'll find the now-crazed former Witcher known as Mad Kiyan. Defeat him and loot his corpse to find the armor diagrams for the Cat School.