Sans - As Sans (Player 2) You need to keep a look out at your energy bar. Every attack makes you use energy, and once you run out of energy you cant dodge an attack (Which uses 3 energy). For all attacks as Sans you use WASD as controls for menu and attacks. Frisk - As Frisk (Player 1) You need to try your best to dodge Sans attacks. You only have 92 health and 3 items which each heal 15 HP. You also use arrow keys for Frisk.