This trick is done before you enter Dillmoor. It can be opened up during the story line, which is the third area opened, but do not enter it or you will lose this chance. At the beginning of the game when the Ruins of Robelia Castle and Gaslin Caves are opened up, or as Dillmoor is opened up, there is a way to keep leveling up for a long period of time before moving on. You can do it all three ways actually. When choosing to enter either Robelia Castle or Gaslin Caves you will be grouped with Pagus or Blockter. Keep going back into that area and fight until you can make it through the area without leveling up once through the whole map and use the appropriate fighting technique (Mystic Attacks in Robelia Castle or Combat Arts in Gaslin Caves). As you do this, your characters will learn more of those skills. If you chose to wait until Dillmoor is opened, do not enter that area or you will lose the leveling ability.
Back to Cheats
Instead, have your two parties run in and out of both Robelia Castle and Gaslin Caves until you do not level up at all running through both areas. Even if you are close to exiting the second area you selected and have one character level up, go through them both again. This is the easiest and most efficient way to level up early in the game, and it keeps your characters leveling up for a very long time. Note that you cannot do the time warp. If you go into Dillmoor you will lose the chance for this leveling up trick. This also gives you the chance to get and sell a lot of your components and gather the rare ones, like the bracelet. Remember that Chimera components are difficult to find; do not sell them. This trick also gives you the chance to get the money together to afford two of every item in Athlum and to save to get two of every item in Celepaleis. Remember to buy the Flamberg for 7,500. Equip it and keep using it until you can unlock its secret attack. This will take some time.