I think a Leatherman, large pocket knife, 4 to 5 inch fixed blade (small), and a machete cover about everything down here in the south. You can vary, but with the machete you don't really need a large fixed blade because the machete takes care of chopping and you can baton with either. Too big a fixed blade than makes all the game cleaning work harder and that's what the fixed is really needed for with a machete on hand. (or hatchet) A filet knife is a nice plus, but you can do without it and make do with the others if you're bugging out and want to keep weight down.
In my kit I have a SOG EOD multitool, a medium size folder, a medium sized fixed blade and a 12" sawback machete. I've tried several variations over several years and that's what I've found works best for me. I also carry a small credit card style tools that consists of a blade, a magnifying glass, tweezers, a plastic toothpick, a liquid filled compass and a P38 style can opener/straightslot screw driver.
I also pack a Glock folding shovel and an SOG hatchet/tomahawk.
Leatherman MUT, Emerson CQC 8, Cold Steel Recon Tanto and Cold Steel Kukri.
Leatherman provides weapons/mechanical/electrical task ability.
Emerson for general cutting/last ditch defense/skinning.
Recon Tanto is last ditch offensive/prying/utility.
Kukri chops and splits small wood well for fire and shelter building.
* Not a knife but I have used the Cold Steel Spetsnaz shovel to cut down small 4-5 inch dead trees, clear brush, dig a snow cave and cat holes.
If I had to pick one it would be the Recon Tanto. Looks like hell after Iraq Deployment and lives in the Truck for whatever I can throw at it.