If there were already Vocator groups waiting on the other side of the lake, then most escape plans are doomed. Myth and Tyrell wouldn't stand a chance; they're straight-up fighters, more or less, nothing tactical or strategic. Just heavy armor, swordmanship, fire, and lightning. In the woods, against stealthy and fast opponents, they wouldn't be able to hold their own.

But then again, I can't quite think of anything else. A bear attacks, gets Artemis before he can call for help? Wolves? Gets stuck in quicksand, and he angers a poisonous snake?