If you put jogurt in your army and kill an enemy with him you get item jogurt ring use in battle on any character and they will look just like a jogurt too! repeat as many times as you want but you will have to get another ring when it breaks.
During the Laser Eye battle in Chapter 3, search to the left of the three dark elves. You'll receive one of the hidden items in the game called Kitui Huku (Tight Clothes in Japanese) give it to Anri and she'll have a new outfit.
The game forces you to allow Tao, Ken, Lowe, Hans, and Luke to join the party before the first battle of the game. There is a way to avoid getting these characters in your party. To do this, when in town at the opening of the game there is a gate but two guards will stop you if you try to leave. There is a blond man in a purple vest near the gate and if you stand one space above him, you will eventually force him to step in the path of one of the guards. At this time you can run past and exit the gate and the guard will not be able to block you. This will send you to the first battle with only Max, making the game quite difficult. Also, even though you avoid taking these characters in your party, they will still speak during some of the cut scenes.
Before the battle against Chaos is over, cast egress. Adam will be at HQ, and will be battle-ready. Normally you would have to speak to him after the battle, giving you the chance to miss recruiting him.