Damage Types

Reducing damage
Armour, blocking with shield and buffs can reduce damage.

Attributes also gives protection from some damage.

Arrow
From arrows

Bludgeoning
From clubs, maces and hammers plus mount bite and kick.

Piercing
From polearms and knives

Slashing
From swords and axes

Acid
From earth magic and acid transmuted weapons plus acid arrows.

Arcane
From guard towers, arcane and lesser magic.

Cold
From water magic and cold transmuted weapons plus cold arrows.

Fire
From fire magic and fire transmuted weapons plus fire arrows. Also from lava in landscape.

Holy
From arcane magic.

Impact
From falling, spikes, thrown stones and cannon balls.

Lightning
From air magic and lightning transmuted weapons plus lightning arrows.

Unholy
From necromancy magic.

Malediction
This is damage from curses. They typically drain a stat or protection.

Mental
This protects against certain debuffs.

Infliction
This kind of damage is typical damage over time (DoT).