I found a Lovecraftian Roguelike!
Infra Arcana
http://oryxdesignlab.com/infra-arcana/Infra Arcana is a Roguelike set in the early 20th century. The goal is to explore the lair of a dreaded cult called The Church of Starry Wisdom. Buried deep beneath their hallowed grounds lies an artifact called The Shining Trapezohedron - a window to all secrets of the universe. Your ultimate goal is to unearth this artifact.
The theme and inspiration for this game comes mainly from the horror fiction writer H.P. Lovecraft. There is a Lore section on this site that describes some of his mythology. The game also draws flavor from various B-horror movies, as well as the first-person shooter PC game Blood.
Infra Arcana adheres to the virtues of the Roguelike genre - high replay value and challenging tactical gameplay.
The tileset and sounds are appropriately spooky. Along with managing your health, you also have a spirit stat that functions as an integrated mana/second health bar. Casting spells costs spirit. Some monsters can strictly attack spirit. If your spirit reaches zero, you die.
Instead of a hunger mechanic there is an sanity mechanic. Sanity is broken down into two meters: Shock and Insanity, each on a 0-100% scale.
Enter a darkened room without a light source or see a cosmic being, you gain shock. Wait too long around a level and you will begin to accrue shock as well. Once shock reaches 100% you have a minor mental breakdown that can be anything from making noise because you are gibbering to having shadows appear and stalk you. Upon reaching 100% shock resets to 0% and Insanity increases by a certain amount. If insanity reaches 100%, you die. Reach the stairs for the next level however and your shock meter is set to zero, encouraging you to explore efficiently.
Currently you can be a War Veteran, Rogue, or Occultist. I recommend Rogue for your first few times since you start with a cloaking spell to escape enemies.
In my second game I got cursed for kicking open the slab to an ancient tomb, grabbed a Tommy gun and unloaded drum after drum into Keziah Mason until the foul witch fell, found out that chopping apart reanimated corpses with an axe is a great way to gain shock way too quickly, drank an insight potion and identified an eldrich artifact that scattered my opponents around the level, threw knives at gun wielding cultists with varying success, watched an infected wound become diseased because I couldn't treat the wound in time oh god oh god the zombies beat down the door I spiked, and threw a bunch of dynamite at Major Clapham-Lee and his undead hoard only to eventually fall to their clutches.
Also, it's free.