In Chapter 4 of the Resident Evil 4 remake, players must explore the expansive lake region to acquire the key needed to open the church. Unlocking this gate requires collecting two statuettes, which are guarded inside the Large Cave Shrine and the Small Cave Shrine. Both locations require players to solve symbol-based stone dais puzzles by identifying yellow markings hidden along the cavern walls.
Understanding the Large Cave Shrine Puzzle
The Large Cave Shrine is situated in the southwestern area of the lake and contains several hostile villagers. Navigating through the area reveals yellow paint splattered across structural columns and stone walls. When viewed from specific angles, these paintings form three complete symbols that correspond to buttons on the pedestal lock.
To unlock the door and claim the Apostate's Head, you must press the three correct dials on the stone dais. The required sequence involves selecting the top-right button, the top-left button, and the bottom button. Pressing these correctly opens the doorway without needing to fight every enemy in the vicinity.
Solving the Small Cave Shrine Puzzle
The Small Cave Shrine is located on the northeastern side of the lake and features no direct combat encounters. However, finding the correct symbols requires careful positioning, as two of the yellow icons are split across separate wooden surfaces and rock faces. Climbing the ladder inside the shrine allows you to line up your camera angle correctly to decipher the hidden patterns.
Once all three markings are identified, return to the stone pedestal at the base of the shrine. The correct button inputs for this lock are the bottom-left symbol, the far-left symbol, and the bottom-right symbol. Interacting with the dais unlocks the nearby gate, giving access to the Blasphemer's Head.
Obtaining the Church Insignia
After acquiring both head key items from the respective shrines, board your boat and travel back to the Mural Cave. Locate the central pedestal featuring two large stone hands. Placing the Apostate's Head and the Blasphemer's Head onto the altar triggers a mechanism that awards you the Church Insignia.
With the Church Insignia in your inventory, you can return to the church entrance to unlock the main door and continue your mission. Be sure to finish any remaining side quests or resource gathering around the lake before moving forward, as passing through the quarry gate will restrict access to earlier areas.