This is the head of Porsmose Man, a skeletonized bog body found in 1946 near the town of Næstved in Denmark.
As fucked up as that arrowhead through the nasal cavity looks, that’s not even what killed him. Rather, he was killed by an arrow through the breastbone that pierced his aorta. The arrows were likely fired from above, at a close distance. Archaeologists suspect he was either surprised by his attackers or was the victim of an execution. In either case, he was thrown in a lake.
Image Source: Wikimedia Commons.