Easy Money and Equipment - Hire a gladiator from the recruiting pool then unequip all of his/her equipment. You can then expel the stripped gladiator from your school and sell/use that equipment. It's cheaper than buying equipment from the vendors and you can sell back excess equipment you've obtained this way at a handsome profit because the hire costs are far less than how much the items' values.

Infinite Money:

Location: Imperia Beach:
(anywhere on the sand)

Method: During the dawn hours of each day, you can search the beach for items. Simply leave your movement control in neutral and Press A. A Searching box will come up, after a few seconds the results of the search will appear. If you didn't find anything, simply move a few paces and try again. If you did, Select ''Pick it Up''.

Remember you can only do this during the dawn hours, once morning is over, you can no longer search the beach.

Once you have your loot, take it to the nearest shop and sell! In one morning, which is a few minutes real time, I made over $100,000.

Finding equipment and weapons - Walk the beach of Imperia in the early morning to find high level equipment and weapons. Stand on the beach and press X. If done correctly, you should see a window with a treasure chest on it, and a message telling you that it is searching. There is no limit to how much you can find; you can acquire a lot of items if you have the time.
Sent in by Rick Carlo

Unlock Harder Enemies  -  Pause the game in a league office then press RIGHT, RIGHT, RIGHT, UP, UP, LEFT, LEFT, LEFT, LEFT, UP, UP, UP, UP, DOWN.

Camera Control  -  Pause the game during combat then press UP, LEFT, DOWN, RIGHT, LEFT, LEFT, LEFT, LEFT, UP, UP, UP, UP.

No Limit Equipment  -  Pause the game at the school menu then press RIGHT, DOWN, LEFT, UP, LEFT, LEFT, LEFT, LEFT, Y, Y, Y.