yeah, goblins were shielding, in the hopes they would get lucky and push the fellowship back, allowing more then to get in, when numbers may have started to count. But it was pretty much impossible. Even leading with captains and having spear support, if any of the good guys roll a 6 from their 3 dice, you know you've had it. Then there's might too...
The bad guys just cant bring their numbers to bare, and unless the good guys roll a series of low rolls (unlikely)... it just aint going to happen...
It might work, as you say if part of a campaign with the fellowship already weakened...
Pity, I had just got all the goblins needed painted up and made the room, and had the MOM scenic bits painted up too, but the scenario made a battle report pointless...
Still its made a good start on building my goblin forces for other games