Grump understood that they were in big trouble, that group drew their weapon as they came closer, if this were a group of normal adventurers then they wouldn't have minded them, they would have left them alone.
Adventurers dont attack people out of the blue, especially when they are not being paid for it, considering their situation, there was a possibility that Carlin could have hired them to kill them, and judging by the strength of the group, there was a strong chance that she was the one that sends them here…
Before he could make any plan for action, one of the mages in the group conjured a big ball made of fire in its hands and threw it at him. The ball landed on the tree behind which he was hiding, the ball was able to instantly light the tree on fire. He then ducked down and rolled over to the side, taking cover behind another tree.