O Level

You begin your adventure in zone O.

You are introduced to the basic concepts of the game as the following:
 * Controls - move left/right
 * Space - jump
 * You can carry one item above your head by pressing down. Only tall doors can be used if you have an item held.


 * Electric blocks hurt you. You can take one damage safely and a second damage will kill you (resetting level).

At the end of the level, you will find a the O Key and the door to the Save Room.

SECRET EXIT
Near the middle of the level, there is a collection of blue cubes near the top of the screen, hiding a door. This leads to the Z Key Level if you can get up there:
 * Use the gunman to shot the blue cubes.
 * Use the jump+toss technique to jump up there.
 * This is much easier to do once you've acquired some more gear.