Reminds me of The Citadel, and not just from how horny the cultists are. Gameplay's pretty solid, guns are easy to use and the enemies have pathfinding and a good, rounded set of behaviors. I like how the floating dudes puke out those big lava circles as it means you can't always just blindly circle-strafe.
It would help that upstairs room where you fight a really big group to have two ways inside, I was tempted to just peak around at the floating dudes first but went "fuck it" and just took the damage to run in guns blazing. Speaking of which, thank you for not making the pistols have an awful spread when you hold the button down but have pixel-perfect accuracy if you click each shot.
Please add rebindable keys so I can put Interact on [F] (where it fucking belongs, [E] is for leaning right). Also definitely need the scroll-wheel for weapon switching. You can get used to pressing the number keys but I'd recommend having a weapon bar show up at the bottom.
Finally, being in Unity I want to guess the player's character controller is updated on the physics step? I run a 144hz monitor and every unity FPS always looks horribly blurry and jittery if you look too close at your surroundings, bothers me the most in Daggerfall Unity. I'm sure there's some merit in a fixed physics timestep, but at least graphically the player's location should be updated every frame.
Edit: Oh, and I appreciate the Linux build. Ran fine on Manjaro.