Rather than waiting for the Ruin Hunter's Eye to glow (or reveal its core), you can reach for its eye area with Keqing's Teleport or climb with GEO MC's E skill then melee attack it, FORCING it to immediately reveal its glowing eye.

Rather than waiting for the Ruin Hunter's Eye to glow (or reveal its core), you can reach for its eye area with Keqing's Teleport or climb with GEO MC's E skill then melee attack it, FORCING it to immediately reveal its glowing eye.