-Goblin Tomb Raider hitpoints increased by 10(!).

-Halfling Magician gains Steal Enchantment, hitpoints increased by 3.
-Draconian Cryomancer loses Mend Magical Being.

-Tigran Cursed flowing curse energy made more subtle.

-Draconian Cryomancer gains Dispel Magic and Mend Magical Being.

Goblin Tomb Raider:
-Movement increased from 24 to 28.

Dwarf Shield Brother:
-Movement increased from 24 to 28.

Tigran Cursed:
-Resistance reduced by 1.
-Melee damage switched to 5 physical and 2 blight.
-Weakening replaced with Inflict Despair.

Frostling Brigand:
-Inflict Immolation replaced with Immolating Projectiles on gold rank.

Fire Volley:
-Limited to once per combat (from 1 turn cooldown).
-Removed additional 5 physical damage vs obstacles.
-Fixed animations to bow animations.

Frostling Brigand:
-Fixed firing point to right hand.

Human Fire Warden:
-Giant Slayer removed.
-Added to Human Berserker spawn list.
-New textures and models
-Added model variants
-New icon
-New ability icon
-Improved sounds

Draconian Cryomancer:
-Melee and ranged damage added to each rank.
-Flamer requisite removed.
-Added to Draconian Apprentice spawn list.
-New textures and staff
-New icon
-Improved sounds

Orc Behemoth:
-Physical and Blight damage added to each rank.
-Defense and Resistance increased by 2.
-Hitpoints decreased by 10.
-Impaler requisite removed.
-Added to Orc Berserker spawn list.
-New textures
-Improved model
-New icon
-New ability icon
-Improved sounds

Dwarf Shieldbrother:
-Physical and Shock damage added to each rank, removed ranged damage.
-Cost changed from 110 gold to 100 gold and 10 mana.
-Axeman requisite removed.
-Added to Dwarf Berserker spawn list.
-New textures
-Added model variants
-Decreased models from 8 to 6.
-New icon
-Improved sounds

Tigran Cursed:
-Added elemental types ranged damage on ranks.
-Added to Tigran Reanimator spawn list.
-New textures and models
-Added model variants
-Increased models from 1 to 3.
-New Icon
-Improved sounds

High Elf Exiled:
-Added melee damage on ranks.
-Added to High Elf Assassin spawn list.
-New textures and models
-Added model variants
-Increased models from 3 to 6.

Halfling Magician:
-Added damage on all ranks up to gold.
-Removed Adventurer requisite.
-Added to Halfling Apprentice spawn list.
-New textures
-Improved sounds

Goblin Tomb Raider:
-Physical damage added onto every second rank.
-Cost changed from 95 gold to 90 gold and 10 mana (before racial substraction)
-Removed Swarm Darter requisite.
-Added to Goblin Assassin spawn list.
-New textures
-Formation changed from 8 organized to 12 unorganized.

Frostling Brigand:
-Removed the additional physical damage on each rank.
-Physical damage added on every second rank.
-Cost changed from 100 gold to 90 gold and 10 mana.
-Added to Frostling Assassin spawn list.
-New textures
-Added model variants
-Increased models from 3 to 8.
-Improved sounds

General things I never bothered go in more detail about:
-Priority listing of most units increased to fit tier 2 units.
-Mercenary hire costs changed to around 200 each (for mods (such as Drunken Mercenaries) that allow this since this is spawn list-based)
-Tiny visual tweaks barely noticeable.