Unfortunately, you have been trapped in a madhouse and you need to escape from this hospital. You need to find the keys and open the door to escape. You can use the box in the hospital to jump higher. Avoid the doctors around, they will beat you by dropping the box on your head. Only nurses are harmless, but avoid their syringes.
Use WASD Keys or ARROW Keys to move, Z or L Key to pull the box, C or K or UP Key to jump, P Key to change the camera view, R Key to restart the level, ESCAPE Key to return to previous menu.