the group was ambushed one day by a large force of orcs and dark elves. They held off the dark forces as long as they could but began to get overrun. Suddenly arrows rained from the sky striking the orcs and dark elves in the head. Another volley of arrows appeared but they were flaming. The remaining threats were neutralized instantly.
The mysterious archer then revealed himself to the group and joined their ranks.

He is a master of stealth and archery
(made for the rpg party skin contest)