Arrow keys + < ( , ) & >/ ( . ) to navigate the menu. The rest of the controls are explained in game You can hold a direction to modify which attack you'll use. Each character also has 2 special moves (an aerial one and grounded one). Some attacks can be charged, you'll start flashing if that's the case. You can perform a grounded special in the air by holding down + special move button. Special moves can also be triggered by pressing shield and attack at the same time.
THIS WAS OFFICIALLY SENT TO ME BY AVID, HE IS ADDING DIGACHAD BACK TO MELEE IN 3.0.0 AND I THINK It WOULD BE FUNNY TO LEAK IT, TO PLAY AS DIGACHAD SIMPLY SELECT DIGSBI, NOTE ITS STILL IN DEVELOPMENT part one of the cheeseburger mod(this was not actually made by avid but digachad WILL be back in 3.0.0)