Play as Ein:
1. First Beat the game with every character.
2. Take Hayate through Survival or Time Attack Mode, and place.
3. Enter your name as "Ein".
4. You can now play him in any mode but Story.

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Unlock Ein's third costume:
Complete Time Attack in under 6 minutes.

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Unlock Kasumi's third costume:
In the Sparring Option, Perform all of Kasumi's moves under the "Exercise"
Option. Once the game awards you the "Complete!" award, you'll have the costume.

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Unlock Zack's third costume:
Beat 20 people in Survival Mode

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Kasumi Hair Trick:
When picking Kasumi, press Y for her long hair, A for her pony tail. .

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Beat the game with each character to see each ending:
Unlock 'Real Ending' with On/Off Option. Beat the game with everyone. The last
character you beat it with will have the staff credits attached to the ending.
Once that's done, you can decide if you want the credits on or off the endings
in the Game Settings Screen

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Watch clips:
When you play as story mode after you have beaten OMEGA you can watch a small
clip. At the main menu you can watch the clips of all the characters that have
beaten story mode.

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Alternate costumes:
Several characters have alternate versions of the default costumes depending on
what button you use to select them on the character screen:

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Ayane:     Select with X on cos2 - white version

Bass:      Select with X on cos2 - no shirt

Bayman:    Select with X on cos1 - blue hat

Brad Wong: Select with X on cos2 - red version

Christie:  Select with X on cos2 - purple version

Kasumi: (works with cos1-3) Select with A - ponytail,
                            Select with X - braided ponytail,
                            Select with Y - hair down

Hayabusa:  Select with X on cos2 - white version

Hayate:    Select with X on cos2 - green version

Helena:    Select with X on cos2 - black version

Hitomi:    Select with X on cos1 - same as cos1, but w/out jacket

Jann Lee:  Select with X on cos1 - black pants,
           Select with X on cos2 - yellow version

Lei Fang:  Select with Y on cos1 - white version
           Select with X on cos1 - blue version
           Select cos1 while holding L - black version

Leon:      Select with X on cos1 - no shirt w/ bandolier

Tina:      Select with X on cos1 - green shirt, leopard pants