Oh crap!
Cromwell's eyes widen, and he opens his mouth to swear. Catching himself, he mutters "Kettenek preserve us,"
and let us not cross your barrier just yet. He pauses for a moment in consideration, thinking of the overloaded cart, Oscar and the unnamed merchant, too wounded to ride, and...
Ride. Outriders. The Skirmish of Shell Hill that scarred Brother Keln always talked about, when light horsemen were able to pick apart the slower Worg cavalry. He thinks for a moment, considering his forces.
"Lisa, Archer, saddle up. Use bow and sling, try to draw them off to the east. You’re faster then they are. Don't let them get too close, but don't stray too far. If some break off to attack you, keep out of their range and keep firing at them, then come back to us- unless there's only one of them, in which case they're just trying to chase you off. Kill him.
“If none of them follow you, stay close and attack their rear when they reach us." He gives Archer a sling to use when his arrows run out, and makes sure that both he and Lisa have plentiful bullets. He gives them each a potion, and the rest- one to each member of the Seven. "I don't know what they do, but it might help," he says. He sends the two of them off. He hesitates a moment, and says seriously “If we fall, you’ve got to carry on warning the other towns.” He salutes them. “Good luck, and be careful.”
That leaves him Nathan, Sadoloth, Hewik, and the wounded Oscar*. He looks around for any cover to steer the wagon too- a fallen log that could form part of a barricade, anything. Even a single tree might help. Failing any cover, he sighs resignedly. "All right. Unload the wagon. If we tip it over we can put our backs to something and avoid being surrounded." If there's even a single tree nearby, they'll flip it over next to that and keep themselves on the tree side, so it won't fall over on them.
He gives Hewik the small-sized Javelins to throw, Ay'tennar, Oscar and himself a poorly-sized sling each, and enough bullets to go around.** He also gives Ay’tennar two of his javelins. “You’ll only have time for one throw,” he says. Sadoloth gets the short spear. “Set it for the charge.”
He realizes something. If there’s time, he says “Everyone give Oscar a small sip of your potion and see if any heal some small measure of his wounds. If so, give him the rest.”***
“All right,” he says, addressing his troops. “We’ve got more arrows and stones than we’ll have time before they close on us, so when I tell you to shoot, shoot, even if its farther than you think you can hit. You might get lucky. Aim for the riders.” With that, he turns to face the enemy, and readies his tiny sling.
When the Goblins reach 1,000 feet, he says “Oscar, longbow. The one farthest to the left.”
When they reach 600 feet, he says “Sadoloth, shortbow. Farthest to the left.”
When they reach 500 feet, he says “Slings. Farthest to the left.” He sends a bullet flying
At 300 feet, he says “Javelins. Farthest to the left.” He follows his own advice.
At 100, he says “Draw weapons, prepare for charge!” As the Worgs bound the last few feet, he yells
“ For Kettenek! For Seven!” and he swings at a rider.
Right, here’s how I figure it goes, if they just run all the way towards us.
When the Wargs reach maximum bowshot range (1,000 feet), we enter initiative. They move 200 feet per round at a run. So Oscar shoots at them once at 1,000 feet. Next turn, Oscar shoots at them at 800 feet. Next turn, Oscar and Sadoloth shoot at them at 600 feet. The next turn, everyone shoots them at 400 feet. The next turn, everyone shoots them at 200 feet (with those with slings switching to javelins). All the time concentrating fire until one worg/rider combo falls, and the moving on to the next.
Then they either run 200 feet in order to be right next to us, and we drop our ranged weapons, draw melee weapons, and hit them, or they double move 100 feet and charge the next turn, in which case we draw melee weapons and ready an attack action.
Okay? 
*What’s Oscar at, anyway? More than 0, right?
** All the weapons are sized for small creatures, so -2.
*** think it says you can find out what potions are by sipping them. Hoping for a cure potion.