Well I actually ran into it via Google so decided to check it out. It's a far cry from what you've made this time, but the beginning was there :-) Yeah, perhaps FOV was not the right term, but indeed the fact that walls block your vision. Would give it a more stealthy feel.
Ah ok, just didn't come across the rocket launcher then, also found the bow-and-arrow just once so far, after your update.