It was the episode where they got hired as mercenaries to attack a fort, and ended up running the boats overland to attack it from the lake (?) side. But he was sent in ahead to attack from the front because Askeladd promised him a duel if he brought the head of the enemy commander. At least from the angle, it looked like a Naruto-Run, where he was leaning forward, arms behind as he was running as he ran at the wall.