The Faelas challenge isn't too difficult unless you fail to pay attention to the clock. I'm a slower gamer in general, I like taking my time and completing everything possible.

In this challenge you need to eliminate more orcs than the attacking drakes who are flying overhead dropping fire on everyone and everything. Just move quickly and take advantage of grog barrels. Firing an arrow will make them explode and you need to kill 15 orcs with explosions.

I had about 6 seconds left before I realized I needed to kill a Drake and was lucky to have full focus at that time. Several arrow shots to a Drakes head will take them down with ease.