if both keyboard?
Viewing post in Light of the Locked World jam comments
Yes, it's possible for both players to play using one keyboard. To do that, you must select "Use keyboard" in player 1 and player 2 control option. Then remap keys so that player 1 would use WASD to move and player 2 would use arrow keys for example.
Be aware of button limit though - in some setups the keyboard only registers up to 4 button presses at a time.
If you have no controllers I recommend using Player 1 - Keyboard and Player 2 - Mouse.