First thing first.
Larva Mortus isn't a high quality game, it does not even try to be one. Larva Mortus is a top down shooter with flaws which offers you couple hours of entertainmentish.
You play as a monster hunter doing various monster hunting tasks. Across your journeys through abandoned warehouses to cemeteries you deal with undead monstrosities, werewolves and such. All are classic horror monsters, even main character is very classical monster hunter manly man. Weapons of slay include revolvers, two handed sword, machine gun etc. etc. Nothing new, you've seen 'em and know em. Oh, you'll gain levels too.
Controls work the way they should, you'll run around using wasd and with the power of mouse you'll aim and deal lead to monstrosities.
First hour of this game is pretty much fun. Also first hour of this game is pretty much all this game has to offer. You run around rooms, killing monsters with guns. Then you run around killing some more. It's really repetitive, but sometimes that is just what we need.
Larva Mortus has serious balancing issues. Instant death dealing monsters, unbalanced weaponry, easily predicted enemies. Difficulty level is a rollercoaster ride in this game. Too easy from pain in the behind hard, no gradual progress in there. Character development is simple as it should be. Problematically you can level up your character to be almost useless. (Free tip, first 5 points goes to walking speed) Still the game has few good horrorish moments and pretty good ambience. Music is nice for the first hour and then it you'll start wishing this game had few more songs. I had no techical issues with game and it ran smoothly.
Main campaing is playable only by leveling up via random quests. These put you around the globe for uh, monster killing, saving people or, you know, killing monsters. Also you can get quest for eradicating monster sings, which is basically the same thing as monster killing.
I recommend this game for horror and top down shooter fans who can deal with B-quality stuff.