Successfully complete Level 5 (Coastal Industrial Zone) with at least a four star rank in Arcade or Realize Attack mode to play the Golden Valley level instead of the Great River Valley level that normally follows.
To get 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.
Successfully complete the indicated task in Arcade mode to unlock the corresponding EX option.
| Fast Climax Gauge Recovery | Activate Climax mode 50 times. |
| Enemy Attack Leveled Down Two Times | Shoot down 3,000 enemies. |
| Enemy Attack Leveled Down Three Times | Shoot down 5,000 enemies. |
| Aircraft Count Increased to 5 | Play a secret stage. |
| Slow Climax Gauge Recovery | Activate Climax mode 100 times. |
| Gun Power Up | Shoot down 50 enemies with your guns. |
| Always Advance To Secret Mission 14 | Play 'Emergency Orders' twenty times. |
| Aircraft Set To Highest Speed | Play through four different branched stages. |
| Automatic Gun | Successfully complete Stage 3 |
| Combo Be victorious indow Twice As Long | Get a combo totaling 1,000 points. |
| Aircraft Count Decreased To 1 | Play a secret stage five times. |
| Unlimited Game Credits | Get a 'Game Over' ten times. |
| Take Half Damage | Get a down rate of 70% ten times. |
| No Missile Recovery | Fire a total of 2,000 missiles. |
| Aircraft Count Increased to 9 | Play a secret stage three times. |
| Automatic Missile Fire | Reach the 'A' ending. |
| Combo Set Till Death Or Stage Clear | Get a combo totaling 3,000 points. |
| 7 Game Credits | Get a 'Game Over' three times. |
| Aircraft Set To Slowest Speed | Play through all eight different branched stages. |
| Automatic Lock-On | Reach the ending ten times. |
| Enemy Attack Leveled Down One Time | Shoot down 1,000 enemies. |
| Enemies No Longer Attack | Shoot down 10,000 enemies. |
| Unlimited Climax Gauge Recovery | Activate Climax mode 200 times. |
| Gun Power Down | Shoot down 200 enemies with your guns. |
| Hide User Interface | Realize over 2,000,000 points. |
| Armor Set At 1% | Get a down rate of 70% twenty times. |
| 5 Game Credits | Get a 'Game Over'. |
| No Missile Smoke Displayed | Realize over 600,000 points. |
| No Explosion Smoke Displayed | Realize over 800,000 points. |
| All Smoke Not Displayed | Realize over 1,000,000 points. |
| 9 Game Credits | Get a 'Game Over' five times. |
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| No Lock-On Cursor | Reach the ending five times. |
| Large Lock-On Cursor | Reach the ending one time. |
| Invincibility Against Enemy Fire | Get a down rate of 70% fifty times. |
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| Unlimited Missile Recovery | Fire a total of 5,000 missiles. |
Keep pushed O until the Sega logo appears to hear the classic 'Sega' voice over.
Successfully complete Level 9A or 9B (Iceberg Base or Sea of Clouds) with at least a four star rank in Arcade or Realize Attack mode to play the Clouds Of Twilight level instead of the Sea Of Twilight level that normally follows.
To get 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.