How you get here
Reached by continuing down the standard chapter route.
Prepare before the checkpoint
- Use the floor's ordinary item and shop opportunities before taking the exit.
- Learn the current variant's room hazards instead of assuming every chapter has the same layouts.
- Check your next route cost before spending keys and bombs on optional rewards.
Checkpoint and exit
This is a good point to judge whether the build needs more damage, firing rate or protection.
Continue toward Depths or enter an available alternate-path door as part of a planned 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.
Catacombs: 13 listed entries
Enemies worth recognizing
Learn the attack cue before entering a crowded room. These are selected preparation references for this floor family, rather than a complete spawn list.
MawA drifting head that approaches while firing an aimed shot.
Red MawA faster Maw whose final hit triggers a four-way shot burst.
Round WormA burrowing shooter that changes the origin of its next shot.
Fat BatA flying enemy that seeks a diagonal firing angle.
MushroomA capped enemy with reduced damage intake while hiding.
StoneyAn invulnerable pursuer that blocks shots without ordinary contact damage.