Illusion of Gaia/Bosses

With one Exception every Boss have 40 HP.

Castoth
First attack both Hands so they dissapear temporarly. Now wait until his Eyes flash. That is when he become vulnerable. Attack him until he become invulnerable, then hide behind him so his Laser don't reach you and reapeat the steps all over again.
 * Health 40 HP

Viper
Just attack him with Freedan when he is in your reach and avoid his Feather and soon this is over.
 * Health 40 HP

Vampir Valor and Vampirella Gitane
Change yourself in Freedan for this Battle, as this will be a great help since there is a Time Limit of 140 seconds. Erik is hold hostage with a Time Bomb. You have to defeat 2 vampire in that time or Erik will die. First concentrate on one and defeat him/her then defeat the other to win the battle.
 * Health 40 HP

Seems both is called Jack and Silvana in the US-Version.

Sand Fanger
He isn't that hard just annoying, so you need to be patient and attack when he comes out of sand. Eventually you will win.
 * Health 40 HP

Mummy Queen
This is the first Battle als Shadow, so make use of Aura soon after you attack her, then avoid the ghosts until the Queen is assembled again. Once she lose 20 HP she will change tactics. Her ghosts will will rotate in a circle around the battlefield instead of spread out and one the ghost is stabil. attack it to make the Queen appear again.
 * Health 40 HP

Dark Castoth
The same old Enemy with more tactics variant, so beware of Fire, 2 Crystal, etc. Luckly you're fighting as Shadow and Aura is really important.
 * Health 40 HP

Dark Viper
Same Tactics as with the old Viper and soon its over.
 * Health 40 HP

Dark Vampir Valor and Dark Vampirella Gitane
This time there is no time limit and you're fighting as Shadow so it should be much easier.
 * Health 40 HP

Dark Sand Fanger
Just be patience and attack when available.
 * Health 40 HP

Dark Mummy Queen
The Tactics is the same here.
 * Health 40 HP

Solid Arm
You probably know this Boss from Soul Blazer where he is the first Boss there. Illusion of Gaia is the second Installation of a Trilogy while Soul Blazer is the first and Terranigma is the third. Anyway he is a secret Boss and completly optional. You need to collect all 50 Red Jewels and bring it to Jeweller to get to Gem Mansion.
 * Health 40 HP

He is quite tough as you will only make 1 damage to him. Method 1 is to hack him on the Belt and then run away to the fartest Belt and attack him again. Repeat it until he go down. Method 2 is to use Psycho Slider to slide behind him and attack him over ander over again. Method is to use the Jump Attack (Forward + ).

Chaos Comet
This is the only one Boss who don't have full HP Slot. He is quite easy to defeat. You just need to stand and fires rapidly with Firebird and then avoid the Meteorrain with Aura. Soon it will be over.
 * Health 20 HP

Dark Gaia
Stand directly under the Head as that is the only Weakpoint. Attack it with Firebird. The Bubble can also be destroyed with it, but evade the 2 Green Orbs with the Aura. Not long and you have won the Game.
 * Health 40 HP