Wraith

Wraiths are incorporeal undead creatures that are more difficult to hit in combat. They are among the more dangerous undead enemies in the dungeon.
Description
Wraiths are ghostly undead with a translucent appearance. They are particularly difficult to hit in combat and can pass through certain obstacles that block other creatures.
Combat
Evasion: Very difficult to hit (high dodge chance)
Attack: Ethereal melee attacks that may have special properties
Abilities: May be able to pass through walls or barriers
Immunities: Standard undead immunities plus possible additional resistances
Characteristics
Incorporeal: May have the ability to phase or pass through obstacles
Hard to Hit: Significantly higher evasion than most creatures
Undead Traits: Immune to poison, bleeding, and other living-targeted effects
Location
Tactics
Use area-of-effect attacks to increase hit chance
Items or abilities that reduce evasion may be helpful
Ranged attacks might be more effective than melee
Fire or holy damage typically effective against undead
Consider using debuffs that reduce accuracy or cause blindness on your enemies
— Additional Information from Wraith.txt —
Wraith
Description
A wraith is a dangerous undead creature, formed from the spirit of someone who died violently or with unfinished business.
Stats
HP: Moderate
Attack Skill: High
Defense Skill: High
Damage: Moderate to high
Speed: Fast
Exp for Kill: Moderate
Special Abilities
Flight: Can pass through walls and obstacles
Phased Attacks: Can attack from unexpected positions due to movement through walls
Undead Nature: Immune to certain status effects like fear and terror
Notes
Wraiths are particularly dangerous enemies because of their ability to pass through walls, making them difficult to avoid or escape from. They can appear suddenly from unexpected locations.