Requires Boss Mode Unlocked. Hold down the corresponding button for the modifier you want while selecting the Boss Rush option. You could mix and match them.
| Code | Effect
|
|---|
| L Button | Nightmare Mode Difficulty.
|
| R Button | Ultimate Zangetsu.
|
| X Button | Infinite Weapon Points.
|
| Y Button | HP / WP Restore After Each Battle.
|
