Walkthrough

Sewers (To Resort Area)

"There's an underground tunnel out there used for inspections, or something! I remember hearing it runs all the way to the lake!"

First Tunnel

Down in the leaky tunnel, take a right around the corner and follow the long path, but stop short of the end and take care of the two Creepers that sneakily come in from behind you a way's down since your full attention will be needed for what's next.

At the end of the tunnel you'll hear clicking sounds, marking the presence of two new enemies called Hanged Scratchers approaching from either side of the next narrow path. They move quickly so step back in the tunnel and eliminate them carefully. The Handgun is most suitable for them one on one but the Shotgun will make quick work of them when needed.

First Two Intersections

The right path at the intersection leads to a fence with a locked gate, so take a left and head down the path to another intersection where it first curves left around it. First continue forward to find some items at the end, including Rifle Shells on the left side and a Health Drink, Handgun Bullets and Shotgun Shells on the right side.

Return to the intersection and continue the other way, first along the left side before crossing over on the right. Then head through the gate on the left side of the fence, since the right side is locked.

Beyond the First Open Gate: Sewer Office

Follow the path along the wall to eventually reach what looks like an open office. Find the Sewer Map (Connecting to Resort Area) and Save Point on the table, and check the open key box for the SEWER KEY. This should unlock the gate near the beginning. If you check your map, it's at the the mid-south of the center path. Continue through the nearby gate and exit through the next gate after unlocking it.

Using the Sewer Key

Head back west, first on the left and then on the right while avoiding the Hanged Scratchers which you may now notice drop down from the roof in various spots. Head around to the left to head south at the intersection, where you may encounter a Scratcher and possibly another after the path curves southward.

Follow along the right side as you pass the original tunnel, then use the 40 Sewer Key to pass through the fence gate at the south end.

Follow the blue grating on the left side and you'll soon meet three Creepers crawling around. When the path diverts in two, you'll find a First Aid Kit on the left side before a dead end. The right path leads to a ladder. Ascend it.

Upper Level Sewers

Still in the sewers, get the First Aid Kit on the grating to Harry's left and continue the other way. If you hold L2 to focus the camera just ahead you'll see several Scratchers hanging on the roof. You can get the drop on them by shooting them down, although it may trigger the rest to come down. Or just sprint through the area.

East and Southward Tunnels
The upper west and south paths are blocked ahead, so take the east one around the left corner and follow the tunnel past a few Creepers. You'll find a Health Drink and Handgun Bullets at the exit of the tunnel. Continue south around the right corner past another Scratcher to enter the larger south pathway.

South Tunnel: Finding and Using the Sewer Exit Key

The left gate is locked so we'll need to take a right to find the key. Pass through the gate on the right side and continue west through a couple more gates after passing some Creepers. Eventually you'll reach the west end with a suspicious bloody spot in the water. With the creepy music edging you on, reach in to find the 41 Sewer Exit Key.

Immediately after you'll be ambushed by three Scratchers. Quickly bail and pass back through the gate on the right side, past another Scratcher waiting nearby (consider quickly blasting it with the Shotgun). Taking the left path instead will spell danger as it's a dead end and you'll get cornered.

Continue through the next two gates on the left side, while the loud bang should encourage you to keep running. With up to three more Scratchers by the east gate, you can take them on or just quickly run up to the gate and slip through, using the Sewer Exit Key.

Now on the safe side, you'll find a Save Point on a barrel next to the exit ladder ahead. Ascend to outside.