A lot of people think these threads are stupid. Maybe they're right. Anyway, they don't have to participate.
Right now I'd be perfectly comfortable taking my Chris Reeve Project 1 for an indefinate period in nearly any environment. I have tested and used this knife extensively, and it has proven itself capable.
Idealy, it would be a custom piece of my own design tailored to my particular quirks and capabilities.
It's tang, gaurd, blade, and pommel would all be one piece of steel, and perhaps even the handle scales too. Makes it easier to disinfect. Wild game carries all sorts of bacteria that can live in inaccessible crevices in knives, which is why I decided to give the Project a whirl in the first place.
It would have a long blade, 8 or 9 inches, about an inch and a half wide, drop point, single edged.
The handle would have an egg-shaped cross section for indexing and roll control, and it would blend smoothly into the gaurd and pommel for comfort. Hard angles make raw spots. For that matter, there wouldn't be a sharp corner anywhere but on the point and cutting edge.
It'd have a double gaurd, but narrow.
It would also be carbon or tool steel, and likely A2.
Oh yeah, kydex sheath and lanyard hole would be nice.
It is worth noting that I use a knife to dispatch large game animals as well as basic utility work.
A machete, particularly a well made one, is also a good survival tool, as is a hatchet, and either will serve you well according to your environment.
I have been considering switching to a hatchet or machete when I finaly destroy my Project 1.