Damage Types

Resistance & Susceptibility Descriptors:
insignificantly     partially       quite               outstandingly
faintly             kind of         substantially       extraordinarily
hardly              somewhat        very                completely
barely              moderately      exceedingly
scarcely            reasonably      exceptionally
slightly            rather          extremely

The following damage types are relatively common in our realm:
air             chopping        fire            pure divine
biological      cold            mental          slicing
blasting        cursed          piercing        water
blunt           earth           poison          whipping
caustic         electric        pure arcane

These damage types may occasionally be encountered, but they are more rare:
leeching        pressure        sonic
mind control    radiant         stasis

These types are hardly (if ever) used.  At some point in the future some
of them may be repurposed for some new type of damage.
antimagic       natural         portal
falling         polymorph       radiant

Damage type field guide

Type	Spells	Weapons	Resistant Races	Vulnerable Races	Resistant Items	Vulnerable Items
air	Cyclone Sandstorm (partial)	Cloud Of Floating Crystals Throwing Ax, "Tornado"	Fire Elemental (barely) Air Elemental (barely) Red Dragons (hardly)	Water Elemental (barely) Earth Elemental (barely) Blue Dragons (hardly)	Cloudwalkers (insign)	Torch Of Flames (faintly) Swirl Of Fumes (faintly)
biological	Plague?? Virus??	Thin Black Sword Called, "Gaunt"	Ghost (faintly) Golem (hardly) Troglodyte (faintly)	Green Dragons (hardly)	Thin Black Sword Called, "Gaunt" (faintly)
blasting	Blast Bolt Detonate Torch	Blasting weapons	Ghost (faintly)
blunt	Dart	Blunt weapons	Ghost (faintly)
caustic	Acid Blast Acid Rain	Swirl Of Fumes	Black Dragons (hardly)			Alienskin Arm Brace (insign)
chopping		Chopping weapons	Ghost (faintly)	Ent (faintly)
cold	Chill Touch Icestrike	Crusher Tourach's Sword	Ent (faintly) White Dragons (hardly)	Firedrake (faintly) Lizardmen (faintly) Tuataur (faintly) Fire Elemental (barely) Red Dragons (hardly)	Cloudwalkers (insign) Wolverine Fur Boots (insign)
cursed	Flash Torment (partial) Brimstone (partial)	Necromancer's Claw	Demonseed (faintly) Demon (hardly) Ghost (faintly) Hobgoblin (faintly)		Shield Of Heroes (faintly) Emerald Gauntlets (faintly)	Helm Of Cherubims (faintly) Ring Of Purity (insign)
earth	Earthbind Earthquake Magma Blast (partial) Sandstorm (partial) Meteor Swarm (partial)	Bow Crafted Of Willow Bark Gnarled Branch Of Age Grey Orb Of Stone Shard Of Echostone	Deep Gnome (faintly) Duergar (faintly) Dwarf (faintly) Gargoyle (hardly) Gnome (faintly) Water Elemental (barely) Earth Elemental (barely) Blue Dragons (hardly)	Fire Elemental (barely) Air Elemental (barely) Red Dragons (hardly)	Heart Of The Forest (insign) Mystical Desert Stone (insign) Shield Of The Tree (insig)	Antharian Signet Ring (insign) Eye Of The Beholder (faintly) Pair Of Steel Bracers (faintly) Robe Of Greatness (faintly) Smoldering Crown Of Dying Fire (faintly) Torch Of Flames (faintly)
electric	Call Lightning Shocking Grasp Lightning Bolt Chain Lightning Torment (partial) Cataclysm	Crackling Sphere Of Lightning	Gargoyle (faintly) Fire Elemental (barely) Red Dragons (hardly)	Merfolk (hardly) Water Elemental (barely)	Cloudwalkers (insign)
fire	Burning Hands Fireball Firestorm Flamestrike Magma Blast (partial) Pillar Of Flame Meteor Swarm (partial) Brimstone (partial)	Dragon-Blade	Firedrake (faintly) Demonseed (faintly) Demon (hardly) Fire Elemental (barely) Earth Elemental (barely) Red Dragons (hardly)	Ent (faintly) Water Elemental (barely) Air Elemental (barely) White Dragons (hardly) Blue Dragons (hardly)	Barbed Steel Mace (insign) Dark Flaming Blade (insign) Impure Diamond Shield (insign) Serpent Shield (insign) Staff Of Cooling Lava (faintly)	Gnarled Branch Of Age (faintly) Ice Ring (insign) Ice Scale Bracer (insign) Waterlace Leggings (faintly)
leeching	Energy Drain Death Field Leech Vampire Touch	Dark Flaming Blade Sword Of Avengers
mental	Psychic Drain Psisting Mindlash Brainstorm Psionic Blast Ultrablast Rupture	Black Bow Called Awe	Duergar (faintly) Lizardmen (faintly) All Dragons (hardly) High Elf (faintly) Tuataur (hardly)		Single Silver Archer's Gauntlet (insign) Silver Astral Gauntlets (insign)
mind control	Mindwipe Shatterspell
natural					Feathered Pair Of Boots (insign)
piercing		Piercing weapons	Ghost (faintly)
poison	poisons	Curved Blade 'Venom' Sharp Dagger 'Poison' Heavy Black Dagger Called, "Virus"	Duergar (faintly) Dwarf (faintly) Ent (faintly) Ghost (faintly) Golem (hardly) Griffon (faintly) Green Dragons (hardly)		Durrite Greataxe (insign) Mithril Web Gloves (insign) Serpent Shield (insign) Heavy Black Dagger Called, "Virus" (faintly)	Alienskin Arm Brace (insign)
pressure	Maelstrom		Water Elemental (barely)
pure arcane	Magic Missile Desiccate Disintegrate		Deep Gnome (faintly) Duergar (faintly) Dwarf (faintly) Gnome (faintly) Sprite (hardly)	Golem (hardly) Elemental (faintly)	Sceptre Of Growing Roots (insign) Major Ward (insign)
pure divine	Cause Light Cause Serious Cause Critical Dispel Evil Turn Undead Turn Demon Harm White Fire White Light	Holy Sword Of Kra	Duergar (faintly) Dwarf (faintly)	Demonseed (faintly) Demon (hardly) Ghost (hardly)	Killing Gloves (insign) Sceptre Of Controlling Shadows (insign)	Carved Bone Necklace (insign) Dark Dwarven Brand (faintly) Shard Of Black Doom Marble (faintly) Symbol Of Darkness (faintly)
radiant			Lizardmen	all No-Sun races (faintly) Black Dragons (hardly)	Emerald Sceptre Of Light (insign) Orb Of Amorphous Essence (insign)	Symbol Of Darkness (insign)
slicing	Shard Storm	Sharp weapons	Ghost (faintly)
sonic
stasis	Struggling in Web??		Ent (faintly)	Goblin (faintly) Kobold (faintly)
water		Heavy Spear, "Ocean" Whale Whisper	Merfolk (barely) Water Elemental (barely) Air Elemental (barely) Blue Dragons (hardly)	Fire Elemental (barely) Earth Elemental (barely) Red Dragons (hardly)	Ouroborus' Tail (faintly) Waterlace Leggings (insign)	Barbed Steel Mace (faintly) Carburized Steel Plate Armor (hardly) Chained Steel Collar (faintly) Flaming Pants (hardly) Slagwalkers (faintly)
whipping		Whipping weapons	Ghost (faintly)

Damage dealt

Some races can also deal damage of some of these types, based on what their resistances are, using Racial Imbue. Right now these appear to be only the races: firedrakes, imps, elemental giants and all dragons. This will show up in 'score' and/or 'affects' when active.

For a low hero firedrake:
Attacks from your dominant hand are augmented with fire damage.
Attacks from your offhand are augmented with fire damage.

For a dust imp:
Attacks from your dominant hand are augmented with earth damage.
Attacks from your offhand are augmented with earth damage.