OK, I figured it out. The problem was I had a Wooting keyboard connected, which also registers as gamepad. So the game presumably still thought there was a gamepad available and ignored WASD keys. I used another keyboard now and played a bit. (Is a bit unclear why you target such an obvious FPS-controls game for gamepad first.)
https://www.twitch.tv/videos/2293386768
Not sure if there is yet more to do than I found out, screenshots show a row of video tapes on the shelf but I only found a few on the ground and no way to get more.
You seem to be enginedeving this, so mad props for what you already got, and building for 4 different platforms. I’m curious to see where this will go gameplay-wise. Keep up the grind.