Crysis 3 comes with a variety of multiplayer challenges you can complete for XP rewards. They range from simple "Kill x enemies with x weapon" over "Do x headshots" to "Stay in Stealth mode for x seconds". To see and choose available challenges just press
in the multiplayer menu to get to the challenge screen.
There are four categories of challenges:
- Squad (only available if you are part of a squad)
Social and Crynet categories hold 3 challenges each while Squad and Lobby only have 1. You can pick whichever ones you like and work on those. Remember to hit Accept after you changed challenges. Each challenge gives you a certain amount of attempts to complete it. One match represents one attempt. If you fail to complete it a challenge will get replaced by a new one. One and the same challenge can come up multiple times but still counts towards this Trophy.
If you are not happy with your current selection you can back out and restart the multiplayer part. This will reset the Social challenges and give you a new set of 3. Do this until you get one that you like.
There is no way in game to check how many challenges you have done. You can however use this website:http://crysis3s.com/
Just type in your PSN ID/Gamertag and select the system you're playing on. The site will give you every stat you might want or need including the amount of challenges you have completed.
A last word of advice. If you have completed a challenge during a match DO NOT
back out. If you do the challenge will not count and you'll waste an attempt.