Integrating oculus view into the survival shooter unity tutorial

Hey, I'm trying to integrate the OVR camera prefab into the survival shooter tutorial on unity, and also trying to change the game view. My main problem at the momment is changing the game view into a first person shooter view (instead of just allowing player to adjust and turn by pointing at a reference in floor's mesh collider). I've tried adding mesh collider component to the walls, but doesn't seem to do the trick. Also, my player HUD canvas layer doesn't seem to be coming through, as soon as I include the OVR camera prefab into the hierachy, no matter how I rearrange it(even tried including the player health HUD canvas layer as part of the OVR camera prefab).

Thanks a lot for the help. ;)