For Pc people, WASD to move, space to shoot, and E to use items around you. For Mobile people, JoyStick to Move, shoot button to shoot, reload button to reload, and hand button to use items around you. Looking around will take some time to do because mobile people also have to touch the screen to move or do anything so, it'll take a long time to finish.
All the music belongs to Valve of course the main creators of the original game. I script it all but also help from GriffPatch!!! Thanks, Sir Yes.