Okay. Here goes.
HUNTER
=====================
Head: 7/7
Body: 12/12
Left arm: 5/5
Right arm: 5/5
Left leg: 5/5
Right leg: 5/5
Status effects: NONE
Items: basic iron sword (right arm)
WILD BOAR
==========
Head: 5/5
Body: 7/7
Left front leg: 3/3
Right front leg: 3/3
Left back leg: 3/3
Right back leg: 3/3
Status effects: NONE
A character is scouting through the woods, trying to find a troublesome boar. Suddenly, the boar jumps out from behind a bush and attacks, attempting to headbutt the unsuspecting hunter!
(No defense roll on surprise attacks)
(Attack strength of headbutt is two thirds of d6, rounded down, plus bonuses & maluses)*rolls die* 5! It's a solid hit, and the hunter becomes disoriented! The hunter takes 3 damage to the head, adding the Dizzy status effect!
-1 attack malus on all even rolls! (this is supposed to act like a -0.5 malus, but might work differently in practice)
The hunter's head now has
4/7 health!
The hunter reacts and swipes at the boar's right front leg with his iron sword!
(Attack strength of basic iron sword is equal to d6, plus bonuses & maluses)
(Defense roll of boar is equal to half of d4, rounded down)*rolls dice* 5 and 2! The slash hits true, and the boar is ineffective in defending itself, sending the boar into a cry of agony! The boar takes 4 damage to the right front leg, sending it clean off! The boar now has the Severe Pain status effect!
-2 on all attack and defense rolls!The boar then attempts to bite the hunter's right arm!
(Attack strength of bite is half of d6, rounded down, plus bonuses & maluses)
(Defense roll via iron sword parry is one third of a d6, rounded down)*rolls dice* 6 and 1! The boar's position was ideal for the attack and the hunter completely failed to defend himself, but the boar's pain served to distract itself from the strike! The hunter takes 1 damage to his right arm!
The hunter's right arm now has
4/5 health!
The hunter now attempts to plunge his iron sword directly into the boar's head.
*rolls dice* 5 and 3! The boar's head is removed completely from the body! The hunter has won the fight!
(A Wild Boar Corpse, a Wild Boar Head and a Wild Boar Leg have been dropped on the ground.)
(The hunter will have the Dizzy status effect until he heals his head -- we'll probably need to add a regeneration mechanic of some sort to this.)
HUNTER
=====================
Head: 4/7
Body: 12/12
Left arm: 5/5
Right arm: 4/5
Left leg: 5/5
Right leg: 5/5
Status effects: Dizzy
Items: basic iron sword (right arm)
WILD BOAR
==========
Head: 0/5
Body: 7/7
Left front leg: 3/3
Right front leg: 0/3
Left back leg: 3/3
Right back leg: 3/3
Status effects: Severe Pain
I'm planning on writing a Python script to automate this to a certain degree. I could technically write AIs for the NPCs, but while that is easy for wild boars, more complicated creatures later on in the game will be harder to manage, requiring input from a Ranger. I'll report progress on that to you later. Right now, we should put this system to discussion and later a ballot. (I'm still a bit confused as to whether you are creating a Warrior's Guild or not, could you please clarify that for me?)