Boss Filter

From BossRush Wiki

Overview

The Boss Filter allows you to customize the Boss pool by disabling Bosses you don't want to encounter or adjusting the appearance weight of specific Bosses in Infinite Hell.
Disabled entries affect the Boss pools used by Standard BossRush, Infinite Hell, From Scratch, Faction War, Blood Hunt and Fate Echo, plus the pool the "Uninvited Guest" random event draws its intruder from; Infinite Hell additionally supports its own per-Boss weight multipliers.
Two exceptions: the Black Market Duck Cup runs its own fighter/opposition roster, and Zombie Mode uses its own zombies. Neither reads this filter.
The Duck King Codex and the PetNest bloodline roster follow the same pool - disable a Boss and you can no longer fight it, but entries you already collected do not disappear.
The filter follows the current Boss roster; fodder units spawned mid-run by Faction War / Blood Hunt never make it onto that list.

Uncheck a Boss in the panel and it will no longer appear in the Boss pools listed above.
Use cases:
- Disable all other Bosses when you want to practice against a specific one
- Temporarily exclude a Boss that's too difficult or annoying
- Narrow down the Boss pool to improve efficiency when farming a specific Boss's drops

You can set an individual appearance weight multiplier for each Boss in Infinite Hell:
- Default weight is 1.0
- Set to 2.0 = double the appearance probability
- Set to 0.5 = halve the appearance probability
- Set to 0 = equivalent to disabling

After a mod update or Boss-pool rebuild, the filter reconstructs its list from the current roster.
Fodder spawned by Faction War / Blood Hunt is removed automatically, so the list never fills up with junk.
The Dragon Descendant, the Skyburner Dragon Lord and a few special Bosses are preserved and will not disappear from the filter because of that cleanup.

Filter settings are saved to the configuration file and automatically loaded the next time the game starts.