I haven't been able to get the game to recognize my controller so far (it's a generic one that registers as an Xbox One controller). Is there anything I can try?
Some 3rd party controllers can be odd- if you have it plugged in, on the main menu press select on the controller and see if it brings up the controller assignment prompt- as long as the controller registers under the xinput range, it should pop up, and then you just press left to assign it to player 1