Here are some cheats and tips for the game Fighting Force 2.
Level select:
Press Left, Up, X, Up, Right, Y when “Press Start” appears on the
opening screen. The screen will flash to confirm correct code entry.
The level selection screen will appear when a new game is started.
Fireworks:
Successfully complete the game, then return to the screen with the
“Start Game”, “Load Game” and “Options” selections to see fireworks.