Sephonie

Get all other trophies.

Link with a Coral.

Link with a species on the surface.

Enter the first layer of the caves.

Link with Thraskias.

Link with Pomelia.

Get the Return to Surface ability.

Reach the depths of Layer 1.

Reach the depths of Layer 3.

Reach the depths of Layer 2.

Enter the core of Sephonie Island.

Finish the game.

Finish the epilogue.

Visit the postgame room.

Link with 10 non-key creatures

Find 20 non-key items.