Play as Ellen McNichol
Focus the game play with Ken. Every time you see Albert, shoot him down. Try shooting him down in all the missions. If done properly, Ellen will be available for the space missions. Ellen has planes like the Bird Of Prey.

Bonus planes
Finish the game and save when asked to. Then use that saved game to continue a new game. Finish the Blue Wing Knights mission, then choose a second mission. Press Square at the aircraft selection screen to select from the Vic-Viper and other bonus planes. The Vic Viper has a longer range machine gun that can destroy an enemy plane with just one hit. Other bonus planes like the TwinBee, MX5000, Falsion, Blue Thunder M-450, Manbou-J, Flint-Rock, Aura-Wing, Jerry Mouse, Block Shooter, Super Fighter, Penta, Axelay, and Poly will also be made available, depending on how well you did in your cleared saved game. You can clear the game on the same file repeatedly to access more planes.

Completion bonuses
Finish the game, then start a second game with your file to start with all airplanes (including bonus planes), medals, money, stats, FMV sequences, and replay levels that were previously made available. You can also view all the characters in a gallery.

Hints & Tips

Easier money
For you to earn double money, kill enemies using the machine gun (not missiles or bombs). You can use those weapons to damage enemies, but the last hit has to be delivered by the machine gun. Some air enemies will give more than double the money. When you complete the mission you will see the scoreboard, showing the enemies you killed with the machine gun with double of the money than normally is awarded.

Gradius reference
Play an Earth mission with the Vic Viper to hear music from level 4 of Gradius. Or play a Space mission with the Vic Viper to hear music from Gradius 2.

Self-destruct in the Vic Viper
While you are flying the Vic Viper, pause the game then press Up(2x's), Down(2x's), Left, Right, Left, Right, X, Circle. The Vic Viper will self-destruct when the game is unpaused.