This is quite impressive for a solo game!
I've played the windows offline version. I could rotate the camera with the right stick of my ps4 gamepad, but could do anything else, therefore I played it with my keyboard. I'm not sure everything worked as it should. I walked up a snowy path, the kid behind me got stuck at trees. and some point I got stuck between some trees but the kid started to walk through trees. At some point we both walked through trees but there were more and more invisible walls. I walked on a fallen tree across a river and ended surrounded by invisible walls and could not walk back.
I really liked the visuals, has "Fahrenheit" vibes. The intro cutscene is also excellent!