On PC, either plug in the second controller or sync it to the computer using an adapter. Make sure it’s synced up with your system. To setup local co-op in Cuphead, all you have to do is grab a second controller and turn it on. Cuphead's local co-op lets you play alongside Mugman.
Luckily, Cuphead’s drop-in, two-player local cooperative mode is the easiest feature of the game so far.
Now that Cuphead is finally out on Xbox One and PC, players are eager to load up the game with their friend for some local co-op fun as Cuphead and Mugman.