Recognize the entrance
What the doorway looks like
The entrance can look like a normal door. The mini-boss is revealed when you enter.
Ordinary doorway


Original game-art examples, shown facing upward where relevant. Door textures and appearance can vary with the floor or item effects.
Find the entrance
How to enter Mini-Boss Room
Explore an ordinary-looking room. Its mini-boss identity becomes clear when you enter.
What you can find
Rewards and opportunities
Enemy-specific drops that may include pickups or an item.
Before you commit
The risk to plan around
You cannot rely on bombing a door to escape the fight. Prepare before entering unexplored rooms at low health.
- Only one Mini-Boss Room normally appears on a floor.
- Its rewards do not follow a universal mini-boss item pool.
Reference
Repentance rules and room variants
This guide describes the room type. Exact layouts and contents can vary. The rules use Repentance references; Repentance+ can change them.