A and D to move left and right, W and S to move up and down on ladders, Space to jump. Avoid the red spikes, (Hard, right?) and reach the door to go to the "next" level. Can change the shape of the Level, Ladder, Goal, and Hazard sprites for varied level design.
Used the updated Platformer script "Complex Collisions Detection," updated by Tekinan. Original script and remainder of code done by me.