Its an over-all fantastic game with the line-of-sight game mechanic keeping a player on toes anticipating whether or not there's an enemy behind the next wall or if that key is bait for a hoard of monsters!
For critique, I'd say some music would've added to the thrill and additional SFX would've fixed some emptiness I felt in the gameplay.
If you wish, you can try out my game as well: Join Me In Dystopia, Pirate! by IndieMonkey (itch.io). I'll be grateful if you leave a review!
Cheers!