Played for a bit, v1.2, I had about a half-second input delay. I've noticed this one all but one submission made with Unreal, so I think it might be an optimization issue. All these games are using dynamic lighting.
The on-screen text always disappears before I can read it. I wandered around, fought one shadow dude at the top of the stairs, interacted with the pylon, saw the door open slightly, but not enough to open... and that's it. I couldn't find out what to do next or where to go. I wandered around. Thinking maybe I hit a glitch, I restarted and did it all again, same outcome.
So based on what I played, it looks great. Controls could've been thought out better. I couldn't use mouse look until after spotting the enemy for some reason. Player guidance needs improvement, Just a bit of optimization and polish and this would be pretty good.