Unlimited tokens:

First download the mini-game "Stuff" to your VMS. Then, save your game. Sell everything you have and go to the Monster House. Buy as many tokens as you can. Put the tokens in your VMS. Reset the game and load your game file. You will have the money, items, and tokens. Again, sell the tokens and save. Go back to the Monster House and buy even more tokens.

Cooks monster:

Beat all of the dungeons and save the game.

Secret pictures:

Insert the game disc in a PC and look through the games BMP directory.