To access the secret stages Golden Valley and Clouds of Twilight in either Score Attack or Arcade mode, you must finish stage 5 (Coastal Industrial Zone) or stage 9A/9B (Iceberg Base/Sea of Clouds) with at least 4 stars. You will then play the secret stage in place of the stage normally encountered (Great River Valley or Sea of Twilight).
To earn a star, complete a stage with at least 50% shot down. You will lose one star if you are shot down, and you will lose all stars if you lose all lives and continue the game. You can have a maximum of 5 stars.
Complete the following achievements to unlock Xbox Live Gamerscore points.
| Achievement | How to unlock
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| - Got a combo of 50 in Arcade mode.
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- Across enemy lines ( 10 points )
| - Cleared Stage 10 in Arcade mode.
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| - Cleared Arcade mode with ending A.
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- Climax Mode ( 15 points )
| - Activated Climax Mode in Arcade mode.
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- Emergency Order ( 20 points )
| - Cleared an Emergency Order in Arcade mode.
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| - Performed a roll in Arcade mode.
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| - Uploaded a Score Attack score to rankings.
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- Stealth bomber ( 10 points )
| - Cleared Stage 5 in Arcade mode.
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- Strike Eagle ( 20 points )
| - Cleared Arcade mode with the F-15E.
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- Super Hornet ( 20 points )
| - Cleared Arcade mode with the F/A-18E.
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- Super Tomcat ( 20 points )
| - Cleared Arcade mode with the F-14D.
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| - Got a AAA ranking in Arcade mode (for Shot Down, Combo, or Play Time).
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Unlockable Avatar Awards can be obtained by completing each specific task listed.
Hold B until the Sega logo appears to hear the classic "Sega" voice over.
You can switch on the EX options you unlock while playing the game and they won't affect your ability to Achievements / Trophies. This means you can add continues, lives etc.
Meet the following conditions during "Arcade" mode to unlock these special settings in "EX Options". They can only be used in "Arcade" mode.
| Unlockable | How to Unlock
|
|---|
| - Play a "Secret Stage" a total of 5 times.
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| - Play a "Secret Stage" 1 time.
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| - Play a "Secret Stage" a total of 3 times.
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| - Play 4 different branched stages (A/B).
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| - Play all 8 branched stages (A/B).
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| - Get a down rate of over 70% a total of 20 times.
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| - Get a down rate of over 70% a total of 10 times.
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| - Get a down rate of over 70% a total of 50 times.
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- Climax Gauge Recovery: Fast
| - Activate "Climax Mode" a total of 50 times.
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- Climax Gauge Recovery: Free
| - Activate "Climax Mode" a total of 200 times.
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- Climax Gauge Recovery: Slow
| - Activate "Climax Mode" a total of 100 times.
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| - Get a combo totalling 3,000.
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| - Get a combo totalling 1,000.
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| - Get a Game Over 10 times.
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| - Get a score of over 2,000,000 points in one game.
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| - Get a score of over 1,000,000 points in one game.
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- Display: No Smoke (Explisions)
| - Get a score of over 800,000 points in one game.
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- Display: No Smoke (Missiles)
| - Get a score of over 600,000 points in one game.
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- Enemy Attack: 1 Level Down
| - Shoot down a total of 1,000 enemies.
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- Enemy Attack: 2 Levels Down
| - Shoot down a total of 3,000 enemies.
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- Enemy Attack: 3 Levels Down
| - Shoot down a total of 5,000 enemies.
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| - Shoot down a total of 10,000 enemies.
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| - Shoot down a total of 200 enemies with the gun.
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| - Shoot down a total of 50 enemies with the gun.
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| - Reaching the ending 10 time.
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| - Reaching the ending 1 time.
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| - Reaching the ending 5 time.
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| - Fire a total of 5,000 missiles.
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| - Fire a total of 2,000 missiles.
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| - Play "Emergency Orders" a total of 20 times.
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