Killing Floor 2 is all about teamwork, as is the case with plenty of the other best co-op horror games out there. Whether it's a classic co-op or player vs Zed mode, you win the match only by playing as a team. Even though the game only offers a co-op experience, the feature of creating a party with friends is not entirely prominent. The game also uses dedicated servers, which complicates the process. But, once you get used to the mechanics, this will no longer be a problem. This guide will tell you how to easily play Killing Floor 2 with friends.