Queen's Domain has more than 100 enemies, mini-bosses and bosses, and the ones with names are listed on the Steam achievement list. What decides nearly every one of them is not your level but your damage type: skeletons fold to blunt impacts and shrug off swords, so the wrong weapon is a losing fight no matter how much damage you bring.

Queen's Domain bosses, named from the achievement list

BossAchievement nameWhere
Dagoom the Sea KingTreacherous BaleenWater Temple
The NecronomiconHell TranscribedThe tomb area
Poenir and Duenir, Malformed Demonic AberrationsDemonic Servitude—
Josami Lord SaijhaSworn Protector—
The Gigantic SerfBeneath Rotten Waters—
Herald of OkbujoDread Silver—
Blood Angel Lords Yuumed and WoyekiFallen Angels—

There are more besides. The Shrine Guardian opens the game, the Tower of Knowledge boss cycles through three forms, the Library boss is fought entirely with throwables, the Petrified Garden holds a whale, Siraatsu Castle has three bosses including the duke and duchess, and there is a spider and bat boss in the mausoleum and a dragon boss in the Record of Sin.

The Necronomicon boss fight in a red-lit chamber: a carved stone face floats in the centre with orange rays behind it, and its own boss health bar runs along the bottom of the screen.
The Necronomicon, one of the named fights on the achievement list, with the boss health bar at the bottom of the screen.

The fights that decide themselves by damage type

Damage type is the deciding factor everywhere in this game. Skeletons are weak to blunt Impact damage and resist swords, while plant and bug enemies are weak to Slash. An impact-type hit staggers a skeleton, and hitting an enemy in the moment before it swings cancels its attack outright.

Against regular enemies the plague chicken is the hardest in the game, ahead of everything else on the list. It is a good test of whether your current weapon is actually working for you. The full damage type system is in the weapons guide.

The fights with special rules

Several bosses ignore the normal rules and impose their own:

  • The Tower of Knowledge boss cycles through three forms with three different weaknesses. The goat form is weak to Impact, the table form to Pierce, and the eye form to Slash — and the eye form additionally resists Pierce. Players recommend grinding to roughly level 29 between the nearest save point and the arena.
  • The Library boss is fought with throwables. Bring all of them maxed, the homing one is the strongest, and the Trusty metal cube stops his spin. Strafing beats standing still, and the moment he raises the platforms for his laser attack is your window to poke him with a spear or the halberd. There is no boss wall around that arena, so adds such as manticores follow you in.
  • The Deimpo Mausoleum boss sits behind the door near Chef Gagi and opens once the six green sigils are dispelled. Players who fought it report it being unexpectedly easy.
  • The Siraatsu Castle bosses — three of them, including the duke and the duchess, must all be killed to open the doors to the final boss. They drop nothing, and the seals that gate the castle are separate from the bosses entirely.
  • The Petrified Garden whale is a massive HP sponge with no trick to it, and it gives up the fifth Trident Emblem.
  • The boss that guards the Tomb of the Necronomicon seals its arena behind you once it dies, so anything you leave inside stays there.

The first boss in the game has its own guide, and it is the one most players get stuck on: the Shrine Guardian guide.

The fights that need a level or a throwable

Two bosses have explicit preparation requirements rather than a weakness you can swap around:

  • The Library boss is a throwable fight, and the toxin-coated throwing daggers are the answer to the flesh faces that seal off its arena and the bridge out of the Tomb of the Necronomicon. You cannot cut flesh open until you have beaten the boss at the top of the Tower of Knowledge, because those daggers are what break them.
  • The Tower of Knowledge boss is a level fight as much as a weakness fight. Roughly level 29 is the practical mark.

Which throwable to bring and when is in the throwing weapons guide.