Beat the game on Nightmare difficulty.
Beat the game, save it, then load and start. When you start run to the save point, save it, then load and start a new game. You will gain more herb. You can repeat it as many times as you like. This will work for other items such as type 32 film but it will take more repetitions.
Xbox Exclusive Ghosts:
|1st night - Abyss||Floating Twins|
|1st night - Burial Room||Fearful Old Man|
|1st night - Fireplace||Ghost in Smoke|
|2nd night - Walkway (Koto)||Smirking Man|
|2nd night - Rope Hallway||Woman in Mirror|
|2nd night - Fish Tank||Wandering Child|
|3rd night - Abyss||Staring Ghost|
|3rd night - Demon Mouth||Beckoning Hands|
|3rd night - Forest Path||Man Buried Alive|
|4th night - The Well||The Sacrifice|
|4th night - Abyss (Fatal Mode Only)||Armored Warrior|
Thanks to Revolution readers Downthesun and radiality!