To gain entry to the main castle, you'll need to navigate the battlements. This section is a gauntlet of Cultists, including archers positioned on higher ledges. Use your rifle to pick them off from a distance. Be wary of enemies throwing Molotovs. There are several explosive barrels and environmental hazards you can use to your advantage. Your objective is to reach the main gate and lower the drawbridge. This involves finding a crank or lever. The path will lead you through several towers and corridors, each with its own set of enemies. Keep Ashley safe by commanding her to stay behind cover or hide in lockers when combat gets intense.

The Castle Battlements — Resident Evil 4 (Remake) Walkthrough