player 1 controls: WASD to move, f to fire, and if you get stuck, press b player 2 controls: arrow keys to move, space to fire, and if you get stuck, press c go grab your mom, dad, sister, brother, aunt, uncle, grandma, grandpa, cat, dog, parot, turtle, ardbark, or just some random person of the street(not recommended) to play with you! enjoy!
thx to @Will_Wam for that extremely funny suggestion on who to play. there is a link in the comments if you want to go check out his 2player project "Will Wam duel"