Perseus Core Fragment A
Location: Sealed Depths – Eternal Abyss
From the mistle, follow the path west to find an enemy hiding behind some tree roots. Destroy the roots and defeat the enemy. Next to where the enemy was hiding will be a lower path. Drop down to that path to find the core fragment in some grass.
Perseus Core Fragment B
Location: Sealed Depths – Eternal Abyss
From the mistle, head south, hugging the ledge on the right path. You will come to a tree root sticking out over the chasm. The core fragment will be located on this tree root. Cut down the small roots to reach it.
Perseus Core Fragment C
Location: Sealed Depths – Eternal Abyss
From the mistle, head south and take the right path. When you come to the cylindrical column, head right and take the path straight to find a pit with a spike ball enemy in it. Drop down into the pit and break the roots on the other side to locate a hidden area containing the core fragment.