Advance 10 levels:
Press R1, L2, L2, Square, X, Triangle, Square in the training area.

Unlock Rome and Greece as Homeland:
Complete the game at least once.

Get a Manica:
To get the manica of the final enemy of a kill off battle, first, kill all of the other enemies around you except the ones with manicas. Then get a small shield, do the bash attack and do the power attack. If you keep repeatings these, you will surely get a manica!