Golden Valley level:
Select Score Attack or Arcade mode. Complete level 5 (Coastal Industrial Zone) with at least a four star rank. The Great River Valley or Sea of Twilight level will appear instead of the usual level that follows. Note: To earn a star, complete a stage with at least 50% shot down. You will lose one star if you are shot down. You will lose all stars if you have to use a continue.
Clouds of Twilight level:
Select Score Attack or Arcade mode. Complete level 9A or 9B (Iceberg Base or Sea of Clouds) with at least a four star rank. The Great River Valley or Sea of Twilight level will appear instead of the usual level that folows. Note: To earn a star, complete a stage with at least 50% shot down. You will lose one star if you are shot down. You will lose all stars if you have to use a continue.
Classic Sega voice over intro:
Hold Circle until the Sega logo appears to hear the classic "Sega" voice over.
Unlock the following EX options by performing the corresponding tasks in Arcade mode. Note: These options only affect Arcade mode games.
EX OPTION - HOW TO UNLOCK
5 Game Credits - Get a "Game Over".
7 Game Credits - Get a "Game Over" three times.
9 Game Credits - Get a "Game Over" five times.
Aircraft Count Decreased To 1 - Play a secret stage five times.
Aircraft Count Increased to 5 - Play a secret stage.
Aircraft Count Increased to 9 - Play a secret stage three times.
Aircraft Set To Highest Speed - Play through four different branched stages.
Aircraft Set To Slowest Speed - Play through all eight different branched stages.
All Smoke Not Displayed - Score over 1,000,000 points.
Always Advance To Secret Mission 14 - Play "Emergency Orders" twenty times.
Armor Set At 1% - Get a down rate of 70% twenty times.
Automatic Gun - Complete Stage 3 Emergency orders.
Automatic Lock-On - Reach the ending ten times.
Automatic Missile Fire - Reach ending "A".
Combo Set Till Death Or Stage Clear - Get a combo totaling 3,000 points.
Combo Window Twice As Long - Get a combo totaling 1,000 points.
Enemies No Longer Attack - Shoot down 10,000 enemies.
Enemy Attack Leveled Down One Time - Shoot down 1,000 enemies.
Enemy Attack Leveled Down Three Times - Shoot down 5,000 enemies.
Enemy Attack Leveled Down Two Times - Shoot down 3,000 enemies.
Fast Climax Gauge Recovery - Activate Climax Mode 50 times.
Gun Power Down - Shoot down 200 enemies with your guns.
Gun Power Up - Shoot down 50 enemies with your guns.
Hide User Interface - Score over 2,000,000 points.
Invincibility Against Enemy Fire - Get a down rate of 70% fifty times.
Large Lock-On Cursor - Reach the ending one time.
No Explosion Smoke Displayed - Score over 800,000 points.
No Lock-On Cursor - Reach the ending five times.
No Missile Recovery - Fire a total of 2,000 missiles.
No Missile Smoke Displayed - Score over 600,000 points.
Slow Climax Gauge Recovery - Activate Climax Mode 100 times.
Take Half Damage - Get a down rate of 70% ten times.
Unlimited Climax Gauge Recovery - Activate Climax Mode 200 times.
Unlimited Game Credits - Get a Game Over ten times.
Unlimited Missile Recovery - Fire a total of 5,000 missiles.
Reaching the final stages:
To reach the final stages (stage 14 and 15) in the game, you must complete at least three out of the possible six "Emergency Orders" while playing. The following is a list of "Emergency Orders" missions and their corresponding objectives:
MISSION - OBJECTIVE
Mission 3 - Destroy the prototype fighter.
Mission 6S - Destroy the stealth bomber with your guns (may leak into mission 7 if you catch up to the target).
Mission 8A - Destroy at least eight of the targeted enemy aircraft.
Mission 8B - Destroy at least ten infantry transport choppers.Mission 10S - Destroy the target aircraft.
Mission 11 - Avoid being detected by the searchlights. Zap the lights or stay very low to the ground.
Mission 13A and 13B - Destroy the nuke carrier before it escapes.
EX options trophies hint
Switching on the EX options you unlock while playing the game will not affect your ability to earn trophies, meaning you can add continues, lives etc.
Note: Trophies can be unlocked with EX options used for easier game play.
ROLL - Performed a roll in Arcade mode.
Climax Mode - Activated Climax Mode in Arcade mode.
50 Combo - Got a combo of 50 in Arcade mode.
Stealth bomber - Clear Stage 5 in Arcade mode.
Across enemy lines - Clear Stage 10 in Arcade mode.
Emergency Order - Clear an Emergency Order in Arcade mode.
Rank In - Uploaded a Score Attack score to rankings.
Triple A - Get a AAA ranking in Arcade mode (for Shot Down, Combo, or Play Time).
Super Tomcat - Clear Arcade mode with the F-14D.
Super Hornet - Clear Arcade mode with the F/A-18E.
Strike Eagle - Clear Arcade mode with the F-15E.
All Clear! - Clear Arcade mode with ending A.