(ONLY WORKS IF YOU HAVE A NUMBER PAD ON YOUR KEYBOARD) PLAYER 1 W to jump S to duck A to use a normal attack D to use a rapid fire attack (has cooldown) E to deploy shield (has cooldown) Q to use death ray (75% chance of hitting you and doing 1 damage, 25% chance of hitting the other player and doing 2 damage, also has cooldown) PLAYER 2 UP ARROW to jump DOWN ARROW to duck LEFT ARROW to use a normal attack RIGHT ARROW to use a rapid fire attack (has cooldown) 0 to deploy shield (has cooldown) 1 to use death ray (75% chance of hitting you and doing 1 damage, 25% chance of hitting the other player and doing 2 damage) Whoever reacher 0 HP first looses. Good luck.
If there are any glitches when pressing the green flag, just press it again, may take 2 clicks. If there are any other issues comment and I'll try to fix it.