Modifiers

Bosses and levels can have modifiers that change aspects of gameplay.

Boss

Bosses can appear with multiple modifiers (at least 5 simultaneous modifiers are possible; possibly unbounded).

Name	Description
Burning	Boss has a fiery aura that damages the player if they get too close.
Champion	Boss HP is increased by 50% and have larger AOE Attacks. Boss Size shrinks with lower health pool.[verification needed • edit • ?]
Cloned	Two of the boss spawn. Both must be killed. Each clone has 50% of the health pool.
Crazed	Boss acts faster. Attacks such as Ymir's beam will not be used in the fight. Bosses after Asgard with this modifier will have 50% more HP.[verification needed • edit • ?]
Dwarf	Boss has a smaller model and moves faster.
Electric	Boss has an electric field surrounding them, lightning bolts constantly fall from the sky. Their strike point is marked with a white dot on the ground. Only occurs with Ymir.[verification needed • edit • ?]
Giant	Boss is physically bigger and has double HP.
Hidden	Boss is translucent, but has a waves visual effect around them. Has 30% less HP.
Lethal	Deals more damage.[verification needed • edit • ?] Only uses its more dangerous attacks. Attacks with hide warnings will not warn you when the attack happens. (unless it's mistcalf's charge)
Poisonous	Attacks inflict damage over time.
Vengeful	Boss shoots projectiles back at you when you damage them which will deal 25 damage.

Level

Levels can appear with a single modifier or none.

Name	Description
Barren	Enemies do not drop coins or keys and reward chests do not spawn.
Bountiful	Bank Chests, Cursed Chests and Pain Chests spawn on room completion.
Castle	The level has a unique vertical room with a Cutthroat that fires beams at the player. A Weapon Chest spawns in this room. Only occurs in Asgard I.
Dark	The level is darker and the player must navigate with a flashlight.
Explosive	All enemies drop skulls upon death, which can be touched to cause an explosion that damages nearby enemies. Enemies won't drop keys or coins.
Frozen	The whole level is ice causing the player to slide about.
Glass	The player and enemies take double damage. Floor texture changes to look more brittle.
Infested	Rooms have more enemies.
Inverted	The player camera is flipped vertically and controls are inverted. Can only occur on Asgard.[verification needed • edit • ?]
Midas	Every enemy drops a coin. Midas Chests always spawn on room completion. Mini-bosses and bosses drop multiple coins instead of a key.
Pitted	The level has a unique room, where you have to complete a (simple) jumping puzzle in order to exit. Only occurs in Vanaheim II.
Retro	Your screen becomes highly pixelated, and your weapon model centers on the screen like in DOOM. Note: this modifier is Challenge specific and does not occur in normal runs.
Space	Gravity is reduced. Doubles the effect of recoil, allowing flight by successively shooting downwards on certain weapons.
Shopless	Neither Huginn's shop nor the Black market will appear on this floor. Muninn's armoury may still appear.