Wow this is excellent. Has some Deus Ex / 47 vibe, just some textures and smoothing groups missing (which would make it look like a late 90ies game). Basically the controls are good, yet inside buildings I often lose orientation, When crouching in a corner, I can't raise the camera and maintain a pitch angle that actually allows to see where the guards are. Also, a mission re-briefing option would be nice. But over all very nice game, proper interaction implementation, Kudos.
also:
no pointerlock after resume, making 360 degree turn impossible. (Brave browser)