TF2 tr walkway rc2 Donwload and Tutorial on Mac HD

How to download tr_walkway_rc2 on mac and a tutorial. Settings: viewmodel_fov 125 viewmodel_fov 99 (Spy) My hud: http://huds.tf/flamehud/ Skins: Rocket Launcher: http://tf2.gamebanana.com/skins/143200 Ambassador: http://tf2.gamebanana.com/skins/143074