Other side of the Monastery.

Blake and the system were right about many things concerning the ruin and the cursed entity controlling it, but they weren't completely right about the power source of the ruin being almost depleted.

The ruin's power core energy level was low, but it wasn't as low and powerless as they thought.

When Major Erik had decided to split up from Blake's team, the cursed entity controlling the ruin channeled most of its energy into the left side of the ruin where he was heading. 

The reason for this was simply because Major Erik was the only demigod-level Ash corp in both groups so it was best to eliminate the supposed highest threat.

The ruin was previously a monastery for a religious group, and its layout which housed females at the left and males at the right was perfectly symmetrical.

Just like Blake, Major Erik had first branched into the living quarters with multiple doors that spanned down the long passage.