Liches were powerful mages in life, and achieved undeath of their own accord. They have retained their intellect—including their spellcasting abilities—while becoming much more physically powerful at the same time. As such, a lich is a dangerous adversary for even the most seasoned adventurers—provided they don't first annihilate themselves with their own magic, which they frequently do. They can be hit by weapons of mithril quality or higher.
These creatures can detect camouflaged or invisible foes, so these spells will not help you. However, the use of Spell Reflection, Spell Resistance, or Spell Absorption is a definite must; a lich can easily kill you if you aren't prepared.
Your safest bets are to attack with ranged weapons or have plenty of healing potions and spells on hand. Liches will sometimes use area affect damage spells at too close a range and harm or even destroy themselves.
- Liches appear in the first and second demos.