The Sewers level is characterized by dark, claustrophobic environments and introduces new enemy types, including the fast-moving Headcrabs and the more resilient Crablets. You'll need to manage your light source (often a flashlight) and navigate flooded areas. Puzzles in this area often involve manipulating water levels, opening floodgates, and finding hidden passages. Ammo and health can be scarce, so resource management is crucial. Be prepared for jump scares and close-quarters combat.
