For player 2 press (W) to jump press (S) to shoot, and to use the special move press (Q). Player one controls press the up arrow to jump, and the down arrow to shoot, to use the special move pres space. You can also press (P) to get a different character for player 1, and to use the new character for player 1 press the up arrow to jump the down arrow to shoot, and the right arrow to use the special move. I also made a mother character for player 2. to use him you press 1 to switch to him, press (W) for him to jump (S) to shoot, and (E) to use the special move. Every special move has a cooldown.
Here are some of my other games. https://scratch.mit.edu/projects/455371242/ https://scratch.mit.edu/projects/473062357/