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. BY THE WAY: This is an Alpha, so it still has many of the bugs from 4.0