"Biohazard 4 Remake DLC: The Story of Queen Ada - Unusual Path with Unique Plot - Illustrated Guide with Complete Side Missions and Collection. Chapter 4 - City Wall Fortress"

Chapter 4 - City Wall Fortress"

Go to the north side of the atrium on the upper floor. Use the jade moon stone to open the door, then enter and open the treasure chest to obtain the precious item [sapphire].

Go to the city wall and obtain the 【yellow herb】.

After having a phone call with Wesker and Leon at the top floor of the fortress, descend to the bottom floor to open the treasure chest and retrieve the treasure [Ruby].

Then head north and enter the Sun Gate. After operating the mechanism, jump from the Moon Gate to the lower level. In the lower level, open the treasure chest to obtain the precious item [Jin Sha Lou].

Return to the upper level and continue heading north. Jump off from the yellow paint area, open the treasure chest to obtain the treasure [Yellow Diamond]. Then kick the door and enter the house, arriving at the specimen room.