Rogue Galaxy

Once you have completed Chapter Nine of Rogue Galaxy, you will unlock this trophy.

Chapter Nine - Mystery of Eden

It's recommended that you're stocked up on recovery supplies because you're going to be fighting a sequence of boss fights.

Objectives to complete this chapter:

1. Return to the Dorgenark’s Control Room.
2. Boss Fight: Zegram
3. Boss Fight: Seed
4. Boss Fight: Beast Seed
5. Navigate through the Labyrinth.
6. Boss Fight: Ragnar
7. Find the Ancient Circuit to repair the robot (must defeat Sand Kraken).
8. Battle: Sand Kraken
9. Use the Ancient Circuit at the Thinking Circle near the robot to repair him.
10. Go to the gate by the Church in Salgin and approach the west gate.

Boss Fight Strategy: Zegram
 

Similar to the Seed battles, you cannot defeat Zegram who now has an extremely high defense stat. Just survive long enough until he eventually runs away in a cutscene.

Boss Fight Strategy: Seed
 

This battle will consist of three different phases. During the first phase, you'll be controlling Zegram as he fights against Seed alone. You cannot defeat Seed, just survive until Jaster and Kisala joins the battle. The second phase, you'll be back in control of Jaster with the part now consisting of Kisala and Zegram; however, you cannot defeat Seed during this phase either. Just survive until a cutscene happens with the pedestals on the Tablet Pit. During the third and final phase, ignore Seed and rush to each pedestal that have appeared and Jaster will place key pieces in each pedestal to end the battle. Remember to heal as needed whenever your party's health falls below 50%.

Boss Fight Strategy: Beast Seed
 

At long last, you can and you must defeat Seed here at all costs. This fight will consist of two phases in total. During the first phase, you'll have Jaster, Kisala and Zegram fighting Beast Seed together. Go all out and use Jaster's Illusion Sword, Zegram's Drunken Burst, and Kisala's Dagger Slash along with a Strength Star. This combination should be more than enough to finish the first half of the fight. During the second and final phase of the fight, Jaster will be in Star King mode and will be fighting Beast Seed alone. In this mode, Jaster's HP increases slightly and he's much stronger than before. Despite the power-up, you'll want to be carefully as Beast Seed can still inflict over 600 damage to Jaster. Make sure your health never falls below 50% while keeping your distance by spamming Illusion Sword with Strength Star and Guardian Sphere buffs.

Boss Fight Strategy: Ragnar
 

Ragnar is a simple boss fight and as usually Jaster's Illusion Sword combined with buff abilities and a Strength Star will quickly deplete Ragnar's health bar.

Boss Fight Strategy: Sand Kraken
 

Sand Kraken is a large boss fight and its attacks can inflict poison on you. You'll need to destroy the Sand Kraken's six legs before you can damage the main body. To destroy all six legs at once use powerful ultimate combination attacks such as Jaster's Supernova. To use Supernova, Jaster, Kisala, and Zegram must be in the party together. Supernova is strong enough to do such a task. After the legs are gone, the Sand Kraken will bury itself in the ground. Now you can climb and jump on its body to attack the Sand Kraken's weak point. Before making the attack on the vulnerable place, be sure that you’re buffed out with buffs and have Jaster's Illusion Sword and Strength Stars up at all times. If you're fast enough, this first assault should kill the Sand Kraken. If you're too slow, the legs will regenerate and you'll need to take all six legs out once again.