How you get here
Unlock A Secret Exit through three Hush wins; the ordinary Downpour/Dross entrance costs a key.
Prepare before the checkpoint
- Keep the route key separate from optional chest spending.
- On floor II, locate the white fire and mirror route for Knife Piece 1.
- Read the ghost-form rules before entering the mirrored floor.
Related item rules: route tools and exceptions mentioned in this guide. Read each effect before relying on it.
Knife Piece 1Checkpoint and exit
Collect Knife Piece 1 from the mirrored Treasure Room on floor II.
Continue toward the next route segment. Missing the knife checkpoint can prevent the standard Corpse route.
Random boss pools by variant
These counts come from the supplied boss-pool data. Pool membership and weight do not guarantee an encounter; fixed finales use route rules.