Solution

On the middle path, choose the mushrooms and do not hit the magnet rocks with the golem's attack.

Description

Intricate patterns were carved into the blade, leaving no space untouched.

We retrieved the swordmaster's weapon from the depths of the valley. The ornamentation alone marks it as a work of art, but the patterns carved into the blade itself are its most striking feature. The ancient technique of the Unyielding Blade passed down in Corvos is said to resemble other magic-focused sword schools, wherein the user channels aether into their weapon and unleashes it as an attack. Likely the patterns on the blade served to condense the wielder's aether, thus amplifying the power of such strikes.

This background explains why the valley became a training ground for aspiring swordmasters. The rocks there were so strongly magnetized that they floated in the air. By pouring lightning-aspected aether into them, one could strengthen the magnetism further. Conversely, earth-aspected aether could be used to weaken the effect. By honing one's mastery over the rocks in the valley, a prospective swordmaster could apply such knowledge to their deadly art.

In fact, we were able to observe several of the once-floating rocks strewn about the ground during our journey. I wonder what would happen if we infused them with aether somehow? At the very least, we would have a taste of the grueling training endured by the swordmasters.