Here is the full list of all 33 Supercharged Robot VULKAISER achievements.
Destroy 50,000 enemies.
Clear the game in Super-Hard Mode.
Destroy 10,000 enemies.
Clear a stage in Super Hard mode without Vulkaiser or any of the Vulkaiser modules being damaged.
Clear the game in Hard Mode.
Clear the game on any difficulty mode without using the Omega Weapons.
Let Roz escape again.
Combine three times with all the Vulkaiser modules.
Clear a stage on any difficulty mode without Vulkaiser or any of the Vulkaiser modules being damaged.
Clear TWO STAGES without combining with any of the other pilots.
Defeat any boss battle with only less than 15 seconds remaining.
Clear the game on Easy Mode.
Clear the game in Normal Mode.
Defeat Space Devil – GOGOH.
Have three of your Vulkaiser modules destroyed. Stop it!
Have two of your Vulkaiser modules destroyed.
Defeat Roz for the last time before he escapes.
Have one of your Vulkaiser modules destroyed.
Defeat Battleship Robot – KONGOUGER.
Combine at least three times with the same Vulkaiser module.
Defeat Supervillain Robot – WARUKAIGER.
Defeat Invasion Mothership - CIGARINGER.
Defeat the Aerobot HENGENGER.
Trigger all Omega Weapons.
Combine at least once with all the Vulkaiser modules in a single run on any difficulty mode.
Destroy 1,000 enemies.
Destroy 5,000 enemies.
Trigger three different Omega Weapons.
Defeat Underground Robot NEGIRINGER.
Destroy a boss as Drill Kaiser.
Score a total of over 120,000 on any difficulty mode.
Trigger an Omega Weapon for the first time.
Combine for the first time.