Finish the game. Load your cleared game file to have the Cherry Sword, Invader Him, Unlock The Real Me, Wild Nside items in your inventory. REMEMBER: Play the records with the sound system at Rizo Island.
Easy come up
Once you get your Thief Suit, go to the castle and find the one of the mimic. The best one is in a room in the hallway where the monkey was. Keep going in and out opening the mimic to get more money. Make sure not to kill the mimic. Just hit him a few times until he runs away so that you can open him.
Fast up at low level
When you get to Caldoaxa Ruins, enter the top house, follow to the right and then up. You will enter the spice shop. Kill a guy blocking the door, enter there and follow to the end. There will be 2 worms glowing blue.Attract the attention of one and... RUN!!!!!! get outta this room fast and go to the next stairs. Get 2 "floors" up and stand...