http://dgportfolio.pbworks.com/f/alvin.rarI did a Warhammer 40k themed tileset. Replaced everything.
I'm not sure how well I did or how much it makes sense but here is the general breakdown:
Playable Classes-
Fighter - Basic Space Marine
Thief - Scout Marine
Priest - Chaplain
Wizard - Librarian
Monsters(thought about some of them, some were arbitrary):
Animated Armour - Tau Battlesuit
Bandit - Dark Eldar Warrior
Dragon - Eldar Fire Dragon
Goat - Khorne Juggernaut
Goblin - Ork
Golem - Chaos Dreadnought
Goo - Nurgle Nurgling
Gorgon - Slaanesh Daemonette
Imp - Tzeentch Horror
Meat Man - Chaos Marine
Naga - Khorne Bloodletter
Serpent - Tyranid Hormagaunt
Vampire - Dark Eldar Incubus
Warlock - Chaos Sorceror
Wraith - Eldar Guardian
Zombie - Necron Warrior
Glyphs(Not sure if everybody sees them the way I do):
APHEELSIK - A poison filled bullet or something...
BLUDTUPOWA - Had no idea what to do so had this syringe injecting blood which turned blue
BURNDAYRAZ - A flamethrower
BYSSEPS - Power Sword
CYDSTEPP - Meant to be a Rosarius projecting a field...
ENDISWAL - A lascannon blasting a wall.
GETINDARE - A jump pack.
HALPMEH - The apothecary's sign. Just seemed appropriate.
IMAWAL - A rock with an unhappy face. There was no 40k equipment that fitted the role that I know of.
LEMMISI - Some tech-ey looking scanner thing.
WEYTWUT - A teleporter pack.
PISORF - A teleporter pack with a different colour... there just isn't a beamgun of random teleportation in 40k :<
WONAFYT - A teleporter homer. A signal for enemies to teleport to I guess.
Dungeon Tilesets:
Normal: Just some vanilla metallic dungeon.
Snake Pit: Tyranid infested desert of sorts, with tyranid spires being the walls.
Crypt: A Necron crypt.
Library: Meant to be Eldar-ish but it turned out weird.
Industrial: Another metallic sorta place, somewhat Imperial themed walls.
Forest: Just another forest.
Etc:
Altar: What I thought an Imperial altar would be like.
Shops: Space Marine Armoury.