Hold I + II + Select + Run and power on the game console. Press Up eight times while holding the other buttons when the word "Start" appears. Use Select, I and II to select the various options, then press Run to begin game play.
Enable the "Cheat mode" code. Select the "Sound" and "Result" options on the cheat screen. Play effect "01", sound "06", and effect "11". Note: Do not wait until the sound ends before playing the effect. Begin game play on level 6. By the time you reach the sword hut, you will already have the Alpha Sword.
Beat the Titan Boss
Move right and jump down the hole after facing the last two enemies, Baron Chairman and Stitch. Move left until reaching the end of the ledge. Jump to the far left to reach another ledge. Run to the right, and allow Keith to fall diagonally and land in front of B.A.D. Boss. Jump up repeatedly (without moving left or right) and hit the Boss with the Alpha Sword.