The Anacrusis is the latest horde shooter to try to fill the Left 4 Dead-shaped hole in the hearts of many players, and the stylish '60s science fiction-inspired co-op shooter has as good a shot as any game in the crowded genre, thanks to its arrival on PC and Xbox platforms. It also features crossplay, which can be a boon to any multiplayer game's community. The multiplayer system does require an extra step though, so use this guide as your introduction to Party Codes, crossplay, and more...