REFUGEVILLE

I agree with BTP's plan. But maybe start with Aello drawing the sigil away from the village and the river first. Once its back is turned and it is no longer within the river, then we bind its legs.

Actually, you think that drawing a lot of symbols would confuse the Galgom enough to be unsure where to attack first? Then cause further distraction with all the stones and other things?

Lastly, the villagers should at least watch out for any flailing limbs. It's probably better to start with the bound legs rather than the arms else someone gets splatted. Then climb on the giant's back towards areas the arms have limited reach before hacking.