Enable free play
Just successfully complete all of the training missions (every icon has three things under it) to unlock free play in arcade mode.
Go to Training Mode to unlock these.
These won't work on the first try because you need to complete them on level 3.
(level 3 is when there are two solid symbols under the picture of the mission and one transparent symbol) Then you will unlock the item. All of these items will go either to your inventory or the shop in special mode.
I'll put Shop or Inv. to confirm which one they go to.
|Unlockable:||How to unlock:|
|Credit + 6 - Inv.||(so on for the rest) Reloading|
|Angle's Kiss - Inv.||Rapid Fire|
|Army Gloves - Inv.||Aiming and Accuracy|
|Spirit Brooch - Inv.||Aiming and Reloading|
|Life + 5 - Inv.||Complete all three levels on Aiming|
|Shotgun Bullet - Inv.||Rapid Fire and Reloading|
|Magazine +4 - Inv.||Rapid Fire and Focusing|
|Credit Infinite - Shop||Aiming Accuracy and Memory|
|Comical Bullet - Shop||Aiming Reloading and Accuracy|
|Mystic Charm - Shop||Aiming Rapid Fire and Reloading|
|Silver Powder - Shop||Rapid Fire Reloading and Focusing|
|Silver Bullet - Shop||Rapid Fire Focusing and Judgement|
|Enable free play||Just successfully complete all of the training missions (every icon has three things under it) to unlock free play in arcade mode.|