The Reservoir

Head up the slimy hill and slash the slime covering a ladder to the right of the locked gate.

Climb the ladder, kill the 2 pigs on the other side for 4 Meat.

Unlock the door. Facing the windmill, head left to find another Labyrinth puzzle.

Enter the windmill, check the barrel for a picture of the Rare Animal (the pig from Luiza's).

Use the Typewriter (a save point) on the table if desired.

Head left, note the sign, go down the stairs, and follow the linear path to interact with the yellow switch to take an elevator down.

Exit the elevator and head right into a clearing. Ignore the locked, barred gate on the right.

Follow the tracks on the floor into a tunnel to the left. Look up at the ceiling to find a shining Crystal Fragment. Stab/slash it with your knife and pick it up.

Proceed through the tunnel to a dead end. Look left for a passage and go up the stairs.

At the top, head left, past a rug, and approach the green slime. Squeeze through to trigger a cutscene (a non-interactive cinematic the game plays automatically) and obtain the Arms Flask.

Head back out and down the stairs, exiting the tunnel. The previous path is blocked, but the previously locked barred gate is now open. Head through it.

Head right, down the slope. Smash the yellow Barrel on the left for Handgun ammo.

Note the Treasure past the water; you will return later. Enter the small wooden shack.

Turn right inside the shack and find a note titled 'The Reservoir and Giant Fish (File)' on the table.

A boat is at the end of the dock, but requires a key from the Mine area.

Head back up the hill into the mine area. Look left for wooden stairs.

Head up the stairs, then right. Find Handgun ammo on a nearby barrel.

Head to the opposite side of the stairs. Slash the yellow tape on wooden beams on the right to create a path.

Climb down the ladder. Behind the ladder at the bottom is a smashable Barrel containing Lei.

Prepare for Lycan enemies. Reload weapons. You can equip the Sniper Rifle, drop a mine at your feet, and get a headshot (a shot that lands on the enemy's head, usually an instant kill) on the closest Lycan. Swap weapons and let the other Lycan trigger the mine.

After defeating the Lycans, explore the area for a Herb.

Walk past the tree and into the water on the left to find Handgun ammo in a boat.

Exit the water. Smash the yellow Barrel on the dock for Lei.

Turn around and smash another yellow Barrel on the left for more Lei.

Enter the small shack to find the Boat Key. Be aware that several Lycans will attack upon entering, including an Armored Variant who drops in front of the door. Explosive weapons are effective. You can use the wooden door on the left to barricade yourself.

If low on ammo or without explosives, you can run away. Grenade Launcher, Pipebombs, and Shotgun are recommended. Defeating enemies yields Crystal Skulls to sell. You can use Flour bags near the Barrel on the dock for cover (press the cover button to crouch behind walls or objects).

Head back up the ladder and down the stairs, exiting to the outside area.

As you head down the slope, watch the roof of the shack for a Lycan. Another is inside the shack. Snipe the one on the roof if possible. Take out the other Lycan.

Approach the boat and use the Boat Key.

Head straight into the large cave from the boat. Make your way to the other side. A Giant Fish will swim by.

Head into the smaller cave and disembark at the dock inside.

Move towards the tent, but turn right before it to find a branching path.

Follow this linear path to a small pool of water with 2 fish. Kill them for 4 Fish Meat. The icon on your minimap (a radar (your minimap with nearby blips and threats marked) showing your surroundings) will be crossed off.

Head back and enter the green tent to trigger a cutscene.

After the cutscene, run up the steps away from the Giant Fish until you reach dry land.

Drop down to the path below, head right, and enter the building: The Gatehouse.

Inside is a console to lower water levels, but power is needed. A poster on the wall explains you need a crank for the windmills.

The Duke (an NPC (non-player character — anyone the game controls, not you), or non-player character) and a Typewriter (save point) are in the Gatehouse. Save your game and visit the Merchant.

Leave the shack via the door between the entrance and the Duke's room. Head right.