| Best Ending |
| Defeat the True Final Boss. |
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| Broken Necklace |
| Complete the "Firmament" level with the Handmade Necklace equipped. |
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| Fight True Final Boss |
Beat Firmament for the second time with the handmade necklace equipped.
| Unlockable | How to unlock
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| Broken Necklace | Beat Firmament with Handmade Necklace.
| | Handmade Necklace | Collect all 7 jewels hidden in various stages and talk to Joule.
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| Handmade Necklace |
| Collect all seven hidden jewels then speak with Joule. |
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| Lumen Audiolocket 1-7 |
Upon cashing in 3000+ or more Kudos via a checkpoint or offensive skill, a special pendant will become available to be synthed. When equipped, it will cause a specific Anthem to be played instead of the usual randomized track.
| Unlockable | How to unlock
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| Audiolocket 1: Beyond the Blue | 1st Sumeragi.
| | Audiolocket 2: Nebulous Clock | Subaquatic Base.
| | Audiolocket 3: Azure Door | Media Tower.
| | Audiolocket 4: Pain from the Past | Biochem Plant.
| | Audiolocket 5: Scorching Journey | Datastore.
| | Audiolocket 6: Rouge Shimmer | Stratacombs.
| | Audiolocket 7: A Zip to the Moon | Pharma Lab.
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| Special Missions |
After beating the true final boss, you'll unlock a series of four gauntlet-style special missions. They feature many more enemies than those found it the regular stages, combined layouts of certain stages, and lack checkpoints.
| Mission | How to unlock
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| Special Mission 1 | Beat the true final boss.
| | Special Mission 2 | Beat the true final boss.
| | Special Mission 3 | Beat the true final boss.
| | Special Mission 4 | Beat the true final boss.
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| The Dullahan |
| After beating all four special missions, you'll unlock the Dullahan, the final weapon in the game. It fires much stronger bullets than the other guns, but is incapable of tagging enemies for electrical attacks.
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