The first part of getting the Shadow of the Tomb Raider Nine Strides outfit is simple. Once you have access to the town of Kuwag Yaku, find the merchant there who sells a variety of items. He'll be able to sell you the chest piece for the Nine Strides costume, which will set you back 3,200 gold coins. You cannot, however, buy the boots from him. So where do you get them from?

To add the Shadow of the Tomb Raider Nine Strides outfit boots to your full costume, you'll need to travel to a certain crypt. The one you want is located South West of Kuwag Yaku. Open up your map and look for the lake that is on the left hand side of it. You'll find the crypt in that region, and you'll need to complete the tasks inside to get the materials for the boots. Once you've done that, you only need to craft them to complete the Shadow of the Tomb Raider Nine Strides outfit. The benefits of wearing the Shadow of the Tomb Raider Nine Strides attire is that it allows you to craft more ammunition for your bow and arsenal of guns, so it's worth wearing this skin on harder difficulties where ammo is scarce.