Dishonored 2
50 Achievements
40-50h
Flooded Basement
Drain the water to recover a Rune
12.5%
How to unlock the Flooded Basement achievement in Dishonored 2 - Definitive Guide
This achievement can be earned during Mission 7, A Crack in the Slab.
After obtaining the Timepiece from The Outsider, leave the room via time travel, similar to how you would for the "Under the Table" achievement, and remain in the past (with the manor fully restored). Take the first door on your right in the hallway and you will find yourself in a kitchen. Time travel to the present, loot the cabinet directly in front of you for a key, then return to the past. Move towards the back of the kitchen and down the small corridor. Use the key to open the locked door, time travel to the present, turn left, and hop out of the broken window (beware of the hound in this courtyard).
Pass through the sealed doors on the left-hand side of the courtyard and you will emerge into a large, debris-filled chamber. Hug the left wall and make your way downstairs into the basement. Time travel back to the past and you will notice two guards in the room ahead. Take both of them out however you'd like, grab the red crank wheel in the display case to the left of where they were, and then throw that wheel into the hole in the wall (the same hole one of the guards was looking through).
You can now switch back to the present, jump through the hole, grab the wheel and attached it to the pipe on the left-hand side of the flooded room, and crank it to drain the water. Once the room has been drained, turn around and you will find a Rune atop a wooden crate. The achievement will unlock after picking up the Rune.
This achievement can be earned during Mission 7, A Crack in the Slab.
After obtaining the Timepiece from The Outsider, leave the room via time travel, similar to how you would for the "Under the Table" achievement, and remain in the past (with the manor fully restored). Take the first door on your right in the hallway and you will find yourself in a kitchen. Time travel to the present, loot the cabinet directly in front of you for a key, then return to the past. Move towards the back of the kitchen and down the small corridor. Use the key to open the locked door, time travel to the present, turn left, and hop out of the broken window (beware of the hound in this courtyard).
Pass through the sealed doors on the left-hand side of the courtyard and you will emerge into a large, debris-filled chamber. Hug the left wall and make your way downstairs into the basement. Time travel back to the past and you will notice two guards in the room ahead. Take both of them out however you'd like, grab the red crank wheel in the display case to the left of where they were, and then throw that wheel into the hole in the wall (the same hole one of the guards was looking through).
You can now switch back to the present, jump through the hole, grab the wheel and attached it to the pipe on the left-hand side of the flooded room, and crank it to drain the water. Once the room has been drained, turn around and you will find a Rune atop a wooden crate. The achievement will unlock after picking up the Rune.
Using the Timepiece go back in time and take out the 2 guards. Once they are gone grab the wheel inside of the case in the back corner of the room and take it through the hole in the wall. Attach the wheel to the spot on the wall. Go back into the present and hop in the water and turn the wheel. The water will subside and the crate will sink to the floor where you can then grab the rune and pop - Flooded Basement Trophy.
P.S. I've read this Trophy can be buggy and apparently reading the note outside on the wall can cause the Trophy to pop after you've done everything else.
Once down the stairs, head to the right and in the past timeline you'll see two guards looking up at a hole in the wall and having a discussion about something. Take out both guards, then grab the crank handle/wheel to the left of where the guards were. Climb onto the box and look through the hole and throw the wheel into the small room there. Switch to the present and limb through the hole and into the water. Swim down to the crank wheel, grab it, then head to the left to find the place where you can put it. Turn the wheel and the water should subside, lowering a floating box with the rune on it. The achievement should unlock about now (or when you pick up the rune).
Note that the first time I did this the water didn't lower due to an odd bug, so make sure you save it back a few steps (perhaps before jumping into the water) in case you need to reload and try again.
1. Kill/put them to sleep
2. Take the valve to the left of the hole and throw it inside
3. Move into the present
4. Insert the valve where necessary and turn it
You are gorgeous!