Cistern — Level 8 walkthrough
A massive flooded cathedral chamber. The puzzle is water level manipulation — three valves around the level raise and lower the water to access different rooms.
The three valves
Each valve adjusts the cistern's water level. You'll need to toggle them in a specific order to reach all the keys.
- Valve A — lowers the water, exposing platforms in the central chamber.
- Valve B — raises the water, letting you swim into upper passages.
- Valve C — drains entirely, exposing the bottom-floor exit.
The order is roughly A → grab key → B → grab another key → C → exit.
Skeletons
- New enemy. They cannot be killed by pistols — bullets pass through them.
- Shotgun knocks them down temporarily but they get back up.
- The only reliable kill is to knock them into water — the central chamber's water levels are your weapon.
Tricky platforming
- The upper crystalline chamber has narrow walkways with no rails. Save before each jump.
- One deep dive section requires holding breath — surface to breathe before pushing on.
Secrets
- 3 secrets. One is in the far back corner of the lowest water level — drain fully before searching.
If stuck: if you've raised and lowered the water and still can't find the exit, you missed the switch on the central pillar's submerged side. Turn the second valve, swim down, and check all four faces of the central pillar.