You have specialized your defensive movements to counter multiple opponents.
Roll d100 versus DR 100
Add the success rate to your defensive bonus and divide between the number of attackers.
Standard combat modifiers
You find yourself up against 3 attackers for 1 round before your allies can help you. You go into 'Multiple Oppoents' which you have 75 skill bonus in. You roll a 50 and can add 25 to your Defensive Bonus. Your Defensive Bonus is 20, so you reach a total lf 45, which gives you a DB of 15 against each of the 3 attackers. (Orignally you would have had 20 against 1 and 0 against the other 2).
Multiple Opponents reflects rigorous training to anticipate, deflect, and mitigate attacks from different directions in melee. Most fighters crumble when flanked or outnumbered, but a trained combatant using this skill maintains their guard through economy of motion, awareness, and endurance.
It scales well with defensive playstyles, shield use, and any combatant operating in tight quarters or tasked with holding lines. This skill's DB bonus stacks with other defensive effects (such as stance bonuses), allowing heavily outnumbered defenders to survive longer.
Great for sequencing.
Sequence with unflankable to avoid attackers taking advantage of numbers, whirlwind to get attacks against opponents in melee range, defensive stance for an even stronger defense etc.
Sliding Attack - Undermines fixed defensive postures by attacking from unusual angles
Flanking Maneuver - force an opposed roll against 'multiple opponents'
Coordinated Fire - Gives bonus per attacker to the attackers to overpower the defense against multiple opponents.
Spells against resilience.