If you're looking to obtain the X-Force Deadpool style then you're going to need to find some pairs of his pants. We'll show you where you need to go and how to salute Deadpool's pants once you get there! This isn't too difficult, and you don't need anything special to accomplish it.
How to Salute Deadpool's Pants
You can salute to Deadpool's pants by just going to one of the six locations on the map and interacting with the pants. It is important to note that you do NOT need the Salute emote. This seems to be a common misconception, you aren't using any emotes, all you need to do is interact with them.
Deadpool's Pants Locations
As far as we know, there's six different locations you can go to salute Deadpool's pants! They are scattered all over the map, but you only need to do it once to complete the challenge. You'll find them at Sweaty Sands, The Yacht, The Agency, Dirty Docks, Slurpy Swamp, and on the mountain east of Misty Meadows.
Some of these locations are easier to get to than others. I don't recommend going to The Agency because it's high on a flag pole and requires that you build up to it. Sweaty Sands is just on a building's roof, The Yacht is on the front of the boat, Dirty Docks is on a metal roof, the one on the mountain is right next to a larger flag pole, and Slurpy Swamp is right on the keg. So, the only one I'd avoid is the one at The Agency!
Once you've saluted the pants, you can leave the game and you will have the X-Force style available for use!