The Grenade Launcher is a game-changer in the sewers. It's typically found in a locked room that requires a specific key or a puzzle solution to access. Once you have it, you'll be able to craft different types of rounds: Flame Rounds are excellent against Hunter Gammas and other biological threats, while Explosive Rounds are great for groups of zombies or stunning Nemesis. Experiment with different round types to see what works best for various situations. This weapon will be crucial for the upcoming boss fight.
