Once you’ve entered the Office head over to the board to collect the Report: About “G” file, then grab the High-Powered Rounds (SLS 60) from the table before exiting. Collect the Submachine Gun Ammo from the northeast, then drop down and follow the corridor around and drop down again to the Lower Waterway, walk across and climb up to find a Blue Herb. Now drop back down and hug the left side to find a High-Grade Gunpowder (White), then follow the path along and head through the door and climb the ladder to the Control Room.
Kill 3 enemies at once with a sub-weapon.
Inside the Monitor Room, you’ll be able to find the Sewers Map to the left of the window and some Large-caliber Handgun Ammo on the table, then head to the west side of the room to find a table with the Sewers Company Pamphlet next to the video player. Now head to the south section of the room to find the Unlocking the U-Area Door file alongside a clue to unlock the door pinned up on the board.
Find The Plugs
You currently don’t have all the chess pieces needed for the puzzle but to make matters easier, take all the pieces from the plug sockets and examine them to reveal the correct name, now place the Bishop Piece into the middle socket on to the left wall, then head over the other side and place the Knight into the socket closest to the back wall, and the Pawn in the socket furthest to the right.
Head to the east side of the room and head outside, make your way over to the lever and interact with it to bring up the bridge to allow you across. Firstly, take the left route to find yourself a Red Herb sitting on the floor by the fence, followed by the T-Bar Valve Handle alongside Leon’s Note that’s by the computer, now go downstairs to collect the Delivery Receipt file from the table.
Make your way to the south of the room where you’ll see a Safe, you’ll find the combination engraved in the right side Left 2, Right 12, Left 8, inside will be the Reinforced Frame (SLS 60) attachment for the Handgun. Finally, grab the Blue Herb that’s sitting by the barrels and head through the exit door before proceeding down stairs, once at the bottom, take a left and follow the path down. Use your T-Bar to unlock the path and head across the bridge to collect the Sewers Key from the wall. Head back up the stairs and grab the Green Herb before using the lever to open a shortcut to the Lower Waterway.
Firstly, head left and keep to the left side to find a Hand Grenade, now to the Workroom Lift and use the T-Bar again to open the path, collect some High-Powered Rounds (SLS 60) from the barrel and interact with the lift to head up to the Workroom. Inside you’ll be able to find another Roll Film from the middle table, some Large-caliber Handgun Ammo from the south side work station, finally a Hip-Pouch from a desk on the north side of the room, unlock the door and enter the corridor.
Head over to the Workers’ Break Room and unlock the door with the Sewers Key, inside you’ll find Gunpowder on the table alongside the Jazz Festival Flyer and Large-caliber Handgun Ammo from the locker. Now head over to the right side of the large locker and interact with it to reveal a lift, use the lift to be taken back up to the Underground Facility. Grab the High-Powered Rounds (SLS 60) off the buckets and head up the stairs to unlock a door to the Underground Stairs, collect the Hand Grenade off the floor before heading further up the stairs until you reach another lift, use it to be taken up to the Police Station Secret Room, and save.
Inside the Station make your way to the Dark-Room with the Roll Films in your possession, place the Roll Film into the sink to reveal two hidden spots that contain items, for the first photo make your way to the S.T.A.R.S Office to find a desk with a Wooden Box in the drawer in the Northwest room of the Office. Examine the box and rotate it until you can interact with it to retrieve the High-Capacity Mag. (MQ 11) attachment, combine it with your MQ 11 in your inventory. For the second photo, head to the Press Room and make your way to northwest corner of the room to obtain some Needle Cartridges, this will unlock the Trophy/Achievement Treasure Hunter.
Using the photo hints, find 2 hidden items.
Head back to the Secret Room and head towards the lift, go down to the lower level, then take the lift back down to the Workers’ Break Room. Exit the room and head over to the Water Injection Chamber, use the key to unlock the door to collect a Gunpowder (Large) alongside a High-Grade Gunpowder (White) before exiting the room and heading across the bridge to collect the Rook Plug. Head downstairs to the Upper Waterway and collect the U.S.S Digital Video Cassette before dropping down, now go west until you see a spot where you can climb up to use your T-Bar to unlock a shortcut to the Bottom Waterway.
You’ll need to drop down and collect a Green Herb off the Zombie and then make your way over to the Supplies Storage Room. It would be easiser for you to dodge all the enemies whilst using the Mixed Herb to help prevent poison and damage. Once you’ve gotten past all the enemies and entered the Supplies Storage Room, head upstairs and shoot the Raccoon that’s hiding behind some boxes at the end of the corridor, now continue onwards to collect a Red Herb that’s sitting on a yellow shelf before heading down the stairs to face a puzzle.
Firstly, head inside and take the Queen Plug out of the socket, then make your way to the west side of the room to find a Blue Herb. Use the Queen Plug to open a door that will give you access to the upstairs, head upstairs and remove the King Plug and then drop down. Head east and place the King Plug into a socket to open a door to the Spark Shot alongside a shortcut, open it and make your way back into the corridor to take back the King Plug. Recover the Queen Plug and reinsert it back where you originally found it and head left to insert the King Plug to open a different door which will allow you to collect the Queen Plug permanently. Finally, take back the King Plug and make your way back to the Monitor Room.
Use The Plugs To Open The Door
With the three pieces needed to complete the puzzle that will open the door, place the Rook between the Knight and Pawn, then place the King to the right of the Bishop and the Queen to the left. Head through the door and downstairs to find a Blue Herb on the floor alongside a Green Herb a bit further in. Make your way to the Main Power Room to turn on the power, once inside collect the Red Herb and then interact with the panel, here you’ll need to flip the switches until the two dials are in the red. You can do this by having the all the switches turned on other than the far left one.
After the power is back on, make your way towards the Garbage Room, unfortunately an unknown enemy has caused a blaze so now you’ll need to keep moving around the room dodging his attacks until it comes through the shutter.
Boss: G (Stage 2)
Once the boss has barged his way through the shutter, dodge his attack and follow the corridor to the Proposed Water Purification Room, drop down and quickly run towards the control pannel to collect a Stun Grenade and a Combat Knife from a barrel. Head to the left side of the panel and grab some Large-caliber Handgun Ammo before finally interacting with the panel to get the crane in position.
In order to unlock the Trophy/Achievement, you’ll only be able to use the crane once so you’ll need weaken him yourself by focus firing on his eye, using the SLS 60 as it’s really powerful against the G (Two to Three Shots to his eye with the SLS 60 will cause him to fall). Continue shooting his eye until it changes from a yellow color to a dark orange which can take between three to four falls before you’re ready to stun him and use the crane.
Whilst you’re weakening him, you’ll have to watch out for his attacks. Being at a distance from the boss will cause the boss to go in for a lunge attack so make sure you’re constantly ready to quickly sprint out of the incoming danger. Keeping close to the boss isn’t a safe option either because it will put you at risk of his grab attack which will do a chunk of damage.
Defeat Stage 2 G using the crane only once.
After you’ve defeated the G for the second time, head over to the south of the room to grab some Submachine Gun Ammo. Head across the recently constructed bridge and up the stairs to unlock a door back to the Garbage Room, now interect with the lever to open the door to Sherry. Take Sherry to the Cable Car and interect with the lever to be taken to the lab.
Once you’ve interacted with the lever you’ll enter a cutscene, after, head to the Security Room where you’ll receive the ID Wrsitband.