Abadox

Super Weapon

Press Up, Down, Right, Right, Up, Left, Right, Down, Left, Up, Start after the "Press Start" message appears. During game play, press Start, Start to get a super weapon.

Invincibility and Super Weapons

Press A, A, Up, B, B, Down, A, B, Start at the title screen. Start the game to play with the invincibility activated. To get super weapons, press Start, Start during game play.

View End Game Sequence

Press A, A, Up, B, B, Down, A, B, B, Start when the phrase "Press Start" appears.

Level Select

Press Left, Up, Right, Down, Up, Right, Left, Down and one of the following buttons at the credits screen.

Level     Button
  2        Up
  3        Left
  4        Down
  5        Right
  6        Select
  7        B

Defeating the Robot Boss

Position yourself in the safe location near where the beams are shooting from the left side of the screen.

Defeating the "Eyeball"

Position yourself in the safe location just to the left of the "Eyeball".