Alright, here's taking from some military background and Tann at least will likely agree. (Anyone else, you've likely seen LotR two towers

)
We currently have the advantage of hieght, and the higher ground the better. We've also, aside from this brief grassy space we're in have rocky outcroppings and boulders likely behind or even before us. If we can take out as many of them before actively engageing them in melee the better. We have plenty of ranged options, from arrows and bolts to Loda's flaming Spheres and the like.
If Loda has an Entangle Spell, I'd suggest backing up beyond the clearing, into the rocky hills and having Loda entangle the clearing as soon as a good number of goblins have entered it, holdin them down while we pepper them with projectiles. Even if not, we can pepper them as they cross the clearing.
With the higher ground, just as we fell on it, we make the enemy come to us, traversing the difficult ground while we secure stable footholds and take them on as we can. Placing Alyssia and Geim in the rear (possibly Malius if he's archery prone rather than dual weapons I'll have to check)
If we can put Alyssia behind Thondrek or another melee fighter, hopefully between two large outcroppings or what not, slightly above them even (I'm suggesting Thondrek because I have the ability to teleport quickly) and as the goblins swarm she can lightning bolt numerous ones in a single spell, and provide some backpacking of spells and healing while the meleeist hacks away.
Thoughts?