W to move forward and S to move backwards. and Move mouse right, left up or down to look and press M for map! You can click to shoot but it looks weird and doesn't do anything. (Still very glitchy: some walls appear in the 3D world but not on the map... I don't really know why so don't rely on the map.) This kinda sucks compared to some others like 'Griffpatch's 3D Laser Tag v0.6c'.
Used some scripts from 'Raycaster Test 3' by @Swampert11 after my own scripts failed to display correctly... but I did change them quite a bit. NOTE: The sound may sound a bit odd. In V2 I made it work slightly better and now you can look up and down! It may appear to freeze sometimes when you do this, but the FPS will stay up. Just walk forward and it should go back. Keep your mouse in the centre for a level view.