While roots and berries are capable of sustaining any individual
for a long time, it is no real replacement for those who lust
after the taste of flesh. The wilderness is inhabited by many
creatures, whose flesh is very edible. Catching these critters
is a challenge indeed, however. Often the best way to catch
such prey is to trap them. Most of the time they are fleet of
foot and cannot be simply caught and killed with a sword. Simple
rope traps, and other means allow one to catch their prey, easily
and cleanly. A skilled hunter can live forever on his own.
Naturally once the prey is caught preparing it for consumption is
another task - maybe if you could cook it over an open fire...