Enter Beetle Forest for the first time. Koris is there, waiting to train you. Talk to him, and go to attacking and defending. He will give you a free Mugwort to start with. Disobey his commands while in training. He will make you start over, but you will still have the Mugwort. Repeat this process to get free Mugwort.

Successfully complete the game and save. Resume the saved game to unlock the Eternal Corridor.

It is possible to get a Minion that has no Water, Air, or Earth, and does not have full Fire. To do this, merge Fire and something else (most likely Water), resulting in half Fire and half something else. Then get another copy of the half/half Minion and merge another element (a pure Minion obviously) into it, without erasing the two it already had. Then. merge the result with the half/half minion original. Next merge a pure Fire into it. You will get a Fire-only minion but without having full Fire. By continuing this method it may be possible to achieve no-element minions.

Once your Capture Level has gone passed 30, you will be able to capture Minions immediately, without fighting them. You can also grow Minions instead of merging them. You should keep and train them for awhile/ You will notice a difference as they begin to grow. Once fully grown, you can merge them.

When you have the list of your Minions on the screen, and are merging, select one of your Minions as the first, then go to a blank space and press the button to view Minion. It will show a secret Minion on the screen, even though the space is blank. This can be done repeatedly, although the game may freeze after awhile.