|Enemies||Bosses||Colosseum of Fools|
|Damage Values||Dream Warriors||Spells and Abilities|
The caverns boast a vast array of bizarre creatures, most either infected or determined to kill any intruders. The Hunter's Journal is a compendium for all these creatures, and defeating a specified amount of a certain enemy reveals additional information about them.
Bosses are unique Enemies in Hollow Knight that typically have higher health and deal more damage than the standard enemies in the same area. The player may have to defeat a Boss to access a new Area, acquire an Item, complete a Quest, or simply further the main story of the game.
When the player encounters a Boss, the Boss' name will appear on-screen, and the music will change into a battle theme.
Some bosses have alternate versions that can be accessed by Dream-nailing their corpse. Usually more challenging than the original fight. Defeating these dream bosses awards a large sum of Essence.
The Colosseum of Fools is an area in Kingdom's Edge where the player may participate in three trials in which they battle waves of enemies in an arena observed by a crowd of bugs and the corpse of Lord Fool.
SOUL is the term used for the white energy extracted from enemies and Soul Totems. It is represented in the player's HUD by a circular meter that fills up with white liquid, revealing two eye holes and giving the meter the appearance of a mask. SOUL is used during combat in the form of spells or healing.
Nail Arts are abilities gained withing the game gained from Nailmasters, these powerful attack have to be charged up but can deliver a powerful blow to finish off an enemy that would've normally taken more hits to kill.