Unlockable - Unlockable Titles | |
| Bravery | Finish the game without ever saving. |
| Critical | Use Criticals to kill 40% of your enemies. |
| Explorer | Find the 23 Tengu treasure chests. |
| Speed | Finish the game in 5:00 or less. |
| Offense | Kill 3,000 or more enemies. |
| Defense | Take less than 5,120 damage. |
Unlockable - Michelle's Second Alternate Costume | |
| Michelle's Second Alternate Costume | Complete the game with an Onimusha rank. Alternately, play the game with a memory card with a saved game from Onimusha: Blade Warriors. |
Unlockable - Costume Unlockables | |
| Samanosuke Special Outfit #2 | Have an Onimusha Buraiden saved file in your memory card |
| Panda costume | Complete the Secret training mode |
| Michelle's secret costume | Finish game once with best ranking(Onimusha). |
| Special Costume #1 for Samanosuke | Complete the game with Samanosuke having higher marks than Jacques. |
| Alternate Method for Samanosuke's Special Costume #1 | Complete the game with Jacques wearing his special costume. |
| Special Costume for Jacques | Complete the game with Jacques having higher marks than Samanosuke. |
| Alternate Method for Jacques' Special Costume | Complete the game with Samanosuke wearing his special costume #1. |
| Panda Costume | Start game with an Onimusha Blade Warriors/Buraiden save file to unlock Samanosuke's Panda costume at the start of the game. |
Unlockable - Unlock mini games | |
| Heihachi Buraiden | Finish the game once on any difficulty |
| Shooting mini game | Finish game once on 'Normal' difficulty |
| Puzzle mini game | Complete all puzzles in the normal game |
| Secret training mode | Complete normal training mode once and unlock it after finishing the game |
Unlockable - Extra modes/difficulties | |
| Ultimate mode | Complete the shooting mini game |
| Issen mode | Complete game on hard mode once |
| Devilish/Oni Hard mode | Complete Issen mode once |
| Hard mode | Complete the game on normal mode once |
| Easy mode | 'Game Over' three times in normal mode, and easy mode will be unlocked |
Unlockable - True Ending | |
| True Ending | Get all Haori for Ako |
Unlockable - Secret weapons | |
| The three swords from Onimusha 1 | Simply collect the 3 key items from just the Phantom Realms at Underwater Temple and Mont St. Michel. |
Secret - Find the Bishamon Sword | |
| Before your last encounter with Nobunaga, go to the save point at the bottom of the stairs to the temple. Look to your upper left. The crazy hanging man is right there. Move a little closer and you'll be, once again, warped to the demon world. Here, you'll have to find 8 red orbs to unlock the chest. Once you do, The Bishamon sword is yours. | |
Secret - Fast Life Recovery | |
| When you have Ako's White Vest equiped rotate the right analog stick and your life will replenish at least 2 times faster. | |
Secret - Infinite souls for Jacques | |
| When you pass the battle where Samanosuke is controlling the Oni army and enter the outer keep for the castle, walk over to the left until you can see Jacques up close and nothing else. Equip Ako with the red vest and start absorbing souls with your gauntlet. The Oni soldiers in the same area will continue to fight and defeat the continuously spawned Genma soldiers. It is important not to stop absorbing the souls, because with each soul absorbed will add to the multiplier bonus for number absorbed. | |
