If you're looking for a ridiculously simple method to killing animals, then:
viewtopic.php?f=2&t=16722You're mostly going to use Unarmed if you plan to meet enemies in melee. There is absolutely no point in trying to do it with MC. The easiest method to killing animals is to just use marksmanship.
For boars, you don't need a signpost trap. Just get a sling, get in a boat, and hit them with one or two rocks until they run. Get out of your boat, change your movement to run speed, then chase them down and use punch on them 1-3 times. Your UAC doesn't matter, they have a defensive weight of 0 when they're running so you automatically do maximum damage every punch. Your punch damage is based 100% off of your STR (And knuckles if you have some on.) If you're going to melee them to death, then read the guide I posted but you don't need to make the signpost trap like I did. It helps as you don't need to chase them though.
Foxes are a bit more annoying because they'll run and you can't catch them. You'll need to make a signpost trap around them before killing them. Remember, they won't break signposts if they're fleeing, so just trap them at a shore, get in a boat, and sling them to death.
Bears either need or don't need a trap. Their damage threshold is pretty low if they cannot path to you, so don't use anything over a q10 sling. With a q10 sling you'll never do enough damage to make them flee, so you just keep throwing rocks at them until they die. If you're using a bow or sling that's too high in quality, then utilize a signpost trap.
For deer, it's a bit more tricky. You're almost guaranteed you won't be able to kill them with a shitty sling or bow, because they'll heal themselves too quickly. If you have terrible stats and equipment, then pull them away from the rest of their herd and trap them on a shore out of distance of the others so they can't be healed by them. Sling them or whatever until they go passive and heal themselves. Don't bother trying to use MM anymore now, engage them in melee. Charge! Until you have 48 Initiative, then Opportunity Knocks x4, Knock His Teeth Out, Flex x5, Opportunity Knocks, Knock his Teeth Out, Flex x5, Opportunity Knocks, Knock his Teeth Out. The deer is now dead.
Once you have Soldier's Training and Leadership, you can engage enemies in melee pretty easily. If you understand combat and how to fight (you don't) then you only need ~25 UA to fight foxes, ~60 for Boars, ~90 for Deer, and ~160 for Bears. It's tricky at these levels and a hell of a lot easier if you get it a bit higher. For point of comparison, if you were to only get MC and to use the Block Maneuver, for a Fox you need ~40 MC, Boars ~140, Deer ~210, and I never managed to safely kill a bear with only MC in w3. I mean, I killed them but I always took a lot of damage. Now they're even harder as they won't build their attack up once they've broken your defense and will instead choose to rapidly attack you.
Edit: For fighting players, you want both UA and MC. UA will win fights but MC will kill people. Which is more important is up to debate but it is without a doubt that you have to have a hefty amount of UA.