Player - Has a initiative of 67 and attacks first.. he selects standard attack
Enemy - is unaware of the attack and has to take ignore.
Player rolls a CS - so gets a A*4 and rolls 4D6 + weapon str.
Player didn't state aiming zone, so we go with MID - and roll 31 [Upper Arm]
First I assume standard HM3 rules
Player rolls the 4d6 for Impact, assume in this example 14 was rolled, to this he adds the Aspect of the weapon he used for the attack. Lets assume that he used a Broadsword in the attack and that he used the Edge Impact (5). We add the roll (14) with the weapon (5) and gets 19 for the total impact., The Enemy, even though he was Unaware, may still use whatever armour protection he has on the Strike Location and Subtract that from the Impact. The poor Enemy in our example only has Cloth (Armor Protection Value or APV of 1 versus Edge) so he subtracts 1 from 19 and gets 18. 18 is the Effective Impact. We look on the Injury Table and reads under 17+ (since there is no 18, so 17+ is the nearest we get) and gets G4 and two symbols.
G4 means that the Enemy has four Injury Levels. This mean a penalty of -20 to Universal Penalty (just about everything) and that he must make a Shock Roll. A Shock Roll is made by adding 1d6 for every Injury/Fatigue Level he has and roll that versus Endurance. In our example, lets assume that the Enemy is fresh and uninjuried when this strike occured. This mean that he must make a 4d6 Shock Roll (4 from his new wound of G4). If this roll is over his Endurance then he will be Unconscious.
The diamond means that the Enemy must make a Fumble/Stumble check and since the Strike Location was an Arm, the check is a Fumble Roll. This roll is made with 3d6, but to this you add the Enemies Physical Penalty. Assume that the Enemy in our Example have a Physical Penalty of 1 (he was uninjured but had an Encumbrance of 1) before the injury, but this is increased to 5 thanks to the injury (G4), So he must make a 3d6+5 roll versus Dexterity or fumble. If he fumbles, he will whatever he is holding in the arm that was injured.
The triangle means Amputation Roll. This is rolled with 4d6 (4 from G4) versus 1/10 of the victims weight. If we assume that the Enemy is Mr Joe Average and therefore weigh 153 lbs. This mean that the 4d6 roll would be made versus 15. If the roll exceeds 15 then the limb (Upper Arm in this case) is cut off.
Bleeders. All grevious wounds are Bleeders so the Enemy will have a bleeding wound. This means that the Enemy will lose 1 BP (Blood Points) each minute until stopped (or he dies).
So if we assumes that this poor Enemy manage to stand up (he succeeds with his Shock Roll) and he also manage to do it with both his arm (he also succeeded with the Amputation Roll) and his weapon (he succeeded with his Fumble Roll) he would still have a bleeder, that will eventurally kill him, but he also has a penalty of 4 UP (Universal Penalty). He will also have his Physical Penalty increased to 5 (4 from Universal Penalty and 1 from Encumbrance). The Universal Penalty is applied to all stats and with a multiple of 5 (to -20 in this case) to all skills. Physical Penalty is applied to all physical stats and with a multiple of 5 (to -25 in this case) to all physical skills. Furthermore, the Enemy would be wise to give up this battle, since all Injuries/Fatigue are added when checking Shock Roll dices, if he gets just a Minor wound (M1) the Shock Roll he must make would be 5d6 (G4+M1=5). And yeah, he must stop his bleeding since if BP (Blood Points) exceeds Endurance he dies.
Have I missed anything?
I edited myself some spelling and clarifications (sort of)