How Do You Get Through the Ruins of Barr in Star Ocean 3?

Save your game after entering the ruins, then head east to the door. Open it with a hard press and hold of the circle button. Go down the hall and watch the event. Open the chest to receive Synthesis Materials. Return to the main room and head north to the door. Tap the circle button gently to open it. You will come to a room with a large cross on the floor. Ignore the room for the moment, proceeding through and heading west. Press the circle button hard to open the door here, then go through.

Head down slightly, then left and up through the door. Go up and you will reach a room featuring a door with changing colors. Unlock it by tapping, pounding, then holding circle for a few seconds. Head through when the door opens and raid the chests for a Damask Plate and Magical Berries. Backtrack to the room with the cross. Open the door on the east side by lightly holding circle. Pass through the door and go south, entering the first door on your right.

Head through the next door at the east end of the hall. Get the Blackberries from the chest and go back out. Follow the path north and head through the northern door. Proceed through the west door for a pair of chests containing a Wind Charm and a Spirit Stone. Head back out and go north to another color-changing door. Give a hard tap and a hard hold to the circle button to unlock it and enter. Get the Wind Pixie from the chest and return to the cross room.

Head to the northern wall of the cross room and examine the writing. Return to the entrance and enter the lab on the western side of the area. Examine the tubes and you will receive a Dragon's Cranium. Save your game and head back to the main room. Exit to the west and veer upward. Step on the tile here, then go south to the door. Unlock it with a hard press and hold of the circle button. Proceed through the door, step on the tile and return to the main room.

Proceed east to the sad dragon door. Open it with a hard press of the circle button and enter. Press the switch on the other side, then go all the way south and activate the panel. Head back to the main room. You will see that all the tiles are activated except for the one in the center. Go north to the dragon and get rid of him with a hard press and hold of the circle button. Head through to the next door. Unlock it with a light tap and hold on the circle button. Continue north, activate the final panel and return to the main room. Step on the center square and go north to save your game and prepare for a boss fight. Head north when you're ready. You will trigger a scene leading to your battle with Robin Wind.

Defeat Robin Wind by dodging his attacks and keeping him in one place. Avoid his whirlwind and confusion attacks as you make use of your battle skills.

Backtrack and save after the fight if you wish, then proceed through to the Urssa Lava Caves to complete the Ruins of Barr.