The save point is on the left, so save your progress.
Continue forward to defeat the enemies ahead. There's a pit in front; go down from the right side.
Climb up from the wall on the right to find materials on the platform to the left.
Turn back to defeat the enemies ahead and grab the chest on the platform.
Open the chest to obtain the offensive accessory "Shield Breaker Charm." This is a fairly practical accessory, as there are quite a few shielded enemies in the game.
