i need assistance with the play on all stages achievement on soul calibur 4...

is there anybody willing to help me with this? i just need a match on the unlockable teeter totter stage real quick. i am on my friends 360 and i need the achievement, and he doesn't have that stage...
this would be very helpful as it would be the 30th achievement, and i really want the leviathan armor...

edit;
also, if you let me win by critical finish. i need that one too...