Navigate the tunnels.
- The tunnels are somewhat straight forward, with a few dead ends.
- Head forward through the passage in front of you, going over to the left and climbing up the stone stairs in front of you.
- Go through the stone archway in front of you.
- From there, continue to the left and upwards.
- Follow the passage over to the right.
- Continue on forward and this will lead to a break in the wall.
- At the end of the tunnel, you will reach Vault Ebisu.
- Below you is an opening in the wall, jump down and through it.
- The next passage is very straight forward, leading into the remains of an armory.
- Go over to the right-hand side of the pillar and follow the passage in front of you to make it to the next area and encounter.