If 6 people attack the bear all using spears and strength potions, each of us only needs to average 1 hit to kill the bear before it can attack us.
5 damage x 6 hits = 30 damage!
Each person could then get 3 food and 1/6 of the hide, 3 claws and a few teeth plus some bones and guts. Perhaps the incentive to kill a bear would be to make an amulet from 3 teeth/claws, some string and an enchantment to give -1 to hit for the wearer. Better yet, Another could give +1 to hit so that with 2 amulets, the wearer gets protection in being harder to hit and also accuracy in removing 1 point of to-hit from the target!