If your the Zombie your controls are the Arrow Keys If your the Player your controls are the Arrow Keys It WORKS!
Thanks to @Astudios for the Engine If the multiplayer is not working for you try the offline version - https://scratch.mit.edu/projects/24736235/ Notes- **The Player1 (Black Dot) Won't have any control until a second player has joined the game... you may see a shaking motion from the Player1. Player 1's goal for the game is to grab all the Objects before the Zombie(Player 2) can grab you.** ***The Player2 (Green Dot) is a zombie and your goal is to run into the Player1 till his/her health runs to zero.***