Combat will work as follows:
Speed will determine who goes first.
Attacker will roll a 1d20, from there, they will add ½ of their accuracy. If it becomes a decimal, round down.
Defender will also roll a 1d20, but they will add ½ of their speed in order to try dodging.
If a defender rolls a 20 on the 1d20, they counterattack, and must roll as an attacker afterwards.
Attackers may attack up to three times per turn, if their skills allow but each attack must be rolled.
Defenders, if attacked three times in one turn, have a chance for a counter-attack, in which they will roll a 1d25. If they roll below a 3 on the 1d25, they counter.
Defenders can choose to block an attack, blocking will reduce the defender's total damage on his next attacking turn by 40%.
If blocking, the defender rolls a 1d5, this is added to their defense during calculations.
If hit, damage calculations will work like this:
(Attackers Power + WeaponPower) – (Defender's Defense + Armor) = Damage total.
Even while this is going on, you will still need to RP your attacks/dodges with a decent amount of detail.
Also, if you attack 3 times in one turn, each attack's damage must be calculated seperately.
This said, if you disappear without giving us a heads up beforehand, you will have twelve minutes to respond to an attack before it becomes an autohit, in order to keep the story going.