Toxic marshland region with dangerous contaminated waters and unique environmental hazards challenging traversal.
Bilewater is an area in Hollow Knight: Silksong. It is characterised by a dark green hue and its murky, swamp-like rooms.
Bilewater is a hazardous swamp of traps, parasites, and secret benches; the route prioritizes safety, upgrades, and sensible checkpoints.
Grab the map and Quick Sling, clear key pickups, unlock benches/shortcuts, then conquer Groal to claim Seeker’s Soul and the Apostate’s Key.
From Grand Bellway, take the Exhaust Organ shortcut; exit bottom‑left and dive into the worm water to enter Bilewater.
Cross the first room and rest at the Bellway Bench.
Climb to the right exit and continue; ignore the mid‑room upward path guarded by a Wardenfly.
Getting caged teleports you to a far region—skip for now and head right.
Drop to the lower ledge and break the left wall to a secret.
Defeat the two Snitchflies and free the trapped Flea at the top.
Return to the central shaft; use Faydown Cloak and Clawline to reach higher platforms.
Find Shakra and buy the Bilewater map for 90 Rosaries.
Climb past Bloatroaches, pogoing on them to stay safe and ascend.
Reveal the hidden ceiling above the right exit to loot the Quick Sling.
Enter the Slubberlug corridor to the right and move quickly to avoid latches.
Push through two nasty stretches to reach the Mask Shard, then open the left shortcut back.
Continue up the Bloatroach shaft; grab a Frayed Rosary String on a right ledge en route.
At the top, the Bench is trapped—spring it if you wish, then swim right to exit and replenish Silk before moving on.
Head right into trap‑laden rooms with Stilkins; you can play the Needolin beneath strung pilgrims for lore.
Climb the first vertical and take the secret ceiling; trigger traps intentionally and rescue the Flea at the end.
Backtrack right, drop into worm water, and strike the right wall to reach the room below.
Break the left wall to a hidden Bench; grab the Memory Locket via the back door and prep for the arena.
From the Bench, climb and take the upper‑left path, then cross a long west corridor with Stilkins and Squits.
In the arena, clear waves and avoid pendulums before fighting Groal—pogo safely, use Clawline for repositioning, and exploit the chew for Silk.
A Bench appears after victory; rest and enter the opened door to Bilehaven.
Claim the Seeker’s Soul—required later to reach Act 3.
Cut the left rope for a downward shortcut, then head up and cut the second rope to open the way forward.
Beware Garnak tongues and a Ductsucker; loot the Apostate’s Key and meet the Huntress to accept her Broodfeast quest, then open the right shortcut.