X-Blades/The Great Gates

Head out and go around a breakup all the pots and vases for souls. Next check under the steps on the right is a Ruby Artifact. Behind the artifact is is the exit, but it's blocked by another forcefield. So for now head up the steps and go forward to the temple gates where the Queen Spider and several Spiders are waiting. But first turn around and head for the left balcony where there is the sixth silver artifact which will give Ayumi Shooting Upgrade Level 2. Then head for the other balcony and grab the Soul Ruby. Now the Queen has of her Spider spawns surrounding her and a group flying insects above her. Start with the insects as they will automatically take any damage that is intended for her. As a magic attack will fly into an insect like magnet. If the spawns start to gang up use a widespread spell. Try not to get too close to the Queen as she will use her dark web pull Ayumi in. Once all the insect are destroyed, hit the Queen with a flurry of fireballs. Eventually She will create more insect to restore her defense. Continue this till monster scale is depleted and the Queen is dead. Another strategy is to use fireball from the distance of one of the two open halls as any of the pillars will at makeshift shields from the violet rays and the spawns won't leave the circle landing unless approached. With the Queen taken care of finish off the remaining spawn. Grab what items are leftover and head for the exit downstairs.