Level Skip: 
 Each level is brought to you by the letter A, E, I, O, 
 or U. At the title screen, press A for level 1, E for 
 level 2, I for level 3, O for level 4, and U for level 5. 
 
 Secret Level:
 Don't forget, the letter Y is sometimes a vowel. At the 
 title screen, press Y for a secret level dedicated to 
 BieberSoft's WonderDweeb. 
 
 Second Weapon:
 This is more of a glitch than a cheat. When playing a one 
 player game with a joystick, press player 2's button #2 
 (Ctrl is the default) and a second stationary weapon will 
 appear in the middle of the screen. To cycle through the 
 weapons, press player 2's button #2. 
 
 Control Both Characters:
 Also a glitch. At the start screen, press Ctrl-Y and 
 set the controls for both players the same (i.e. have 
 both of them use Joystick 1) then start a two player 
 game. You can now control both Ernie and Bert with one