The following medals can be obtained by completing certain tasks in the game.

Medal	How to unlock
ACE	Clear a stage without getting hit even once (any stage).
All stages	Cleared all stages (both paths).
Destroy the giant	Kill boss in less than 3 minutes (possible with any boss).
Earth	In Mission 6A destroyed the prototype machine (Earth).
First tuning	First subunit equipped.
Fluorescent lance	Get rank of SS in all stages.
Jupiter	In Mission 10 destroyed the prototype machine (Jupiter).
Launch	Played for the first time.
Let's go shopping	First subunit bought.
Mars	In Mission 8 destroyed the prototype machine (Mars).
Mercury	In Mission 2 destroyed the prototype machine (Mercury).
Mission 1	Cleared Mission 1.
Mission 10	Cleared Mission 10.
Mission 11	Cleared Mission 11.
Mission 12	Cleared Mission 12 (any path).
Mission 13	Cleared Mission 13 (any path).
Mission 14	Cleared Mission 14.
Mission 15	Cleared Mission 15.
Mission 16	Cleared Mission 16.
Mission 2	Cleared Mission 2.
Mission 3	Cleared Mission 3.
Mission 4	Cleared Mission 4.
Mission 5	Cleared Mission 5.
Mission 6	Cleared Mission 6 (any path).
Mission 7	Cleared Mission 7 (any path).
Mission 8	Cleared Mission 8.
Mission 9	Cleared Mission 9.
Moon	In Mission 6B destroyed the prototype machine (Moon).
Neptune	In Mission 14 destroyed the prototype machine (Neptune).
Pluto	In Mission 16 destroyed the prototype machine (Pluto).
Rank S	In every stage receive rank S or higher.
Ratel	Clear campaign (Mission 1 to 16) without even once losing to Ratel.
Samurai	Killed 1000 enemies or more with a sword.
Saturn	In Mission 12A destroyed the prototype machine (Saturn).
Shopping spree	Bought all the parts.
Standard demon	Clear campaign (Mission 1 to 16) without using even one customized part.
Uranus	In Mission 12B destroyed the prototype machine (Uranus).
Venus	In Mission 4 destroyed the prototype machine (Venus).
White god of death	Clear campaign (Mission 1 to 16) without losing or aborting a mission.
Worthy opponent	Destroyed rival in less than 2 minutes (Excluding Mission 5).