| Achievement | How to unlock
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|---|
| Arcade Clear: Easy | Clear Arcade Mode on Easy (or higher).
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| Arcade Clear: Hard | Clear Arcade Mode on Hard (or higher).
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| Arcade Clear: Normal | Clear Arcade Mode on Normal (or higher).
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| Arcade Clear: V. Hard | Clear Arcade Mode on V. Hard.
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| Challenge Mode Champion | Win a Challenge Mode fight against three opponents.
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| Excessively Stylish | Reflect a bullet that was reflected by the Rival.
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| Intrepid Explorer | Investigate the pit in Guppy's Manor.
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| Quiet Contemplation | Recite some poetry atop the Hall of Heroes.
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| S-Rank: Battalion | Defeat Battalion with an S-Rank.
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| S-Rank: Bubble Core | Defeat the Bubble Core with an S-Rank.
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| S-Rank: Bunny Rockette | Defeat Bunny Rockette with an S-Rank.
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| S-Rank: Chopper Core | Defeat the Chopper Core with an S-Rank.
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| S-Rank: Dragon Heart | Defeat the Dragon Heart with an S-Rank.
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| S-Rank: Gibby & Stu | Defeat Gibby & Stu with an S-Rank.
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| S-Rank: Guppy | Defeat Guppy with an S-Rank.
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| S-Rank: Laser Bots | Defeat the Laser Bots with an S-Rank.
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| S-Rank: Mantis Core | Defeat the Mantis Core with an S-Rank.
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| S-Rank: Mirror Core | Defeat the Mirror Core with an S-Rank.
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| S-Rank: Rival | Defeat the Rival with an S-Rank.
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| S-Rank: Spider Core | Defeat the Spider Core with an S-Rank.
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| S-Rank: White Mk II | Defeat White Mk II with an S-Rank.
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| Secret Mission 01: Gate Crasher | Secret Mission 01: Gate Crasher
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| Secret Mission 02: Anti-Omelette | Secret Mission 02: Anti-Omelette
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| Secret Mission 03: Lil' Mama | Secret Mission 03: Lil' Mama
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| Secret Mission 04: Speed Demon | Secret Mission 04: Speed Demon
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| Secret Mission 05: Preferred Polarity | Secret Mission 05: Preferred Polarity
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| Secret Mission 06: Clean Shoes | Secret Mission 06: Clean Shoes
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| Secret Mission 07: Perfect Pacifist | Secret Mission 07: Perfect Pacifist
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| Story Clear: Easy | Clear Story Mode on Easy (or higher).
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| Story Clear: Hard | Clear Story Mode on Hard (or higher).
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| Story Clear: Normal | Clear Story Mode on Normal (or higher).
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| Story Clear: V. Hard | Clear Story Mode on V. Hard.
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