Just some extra info...

The Algonkian Windigo (or Witiko) is a seasonal, subarctic man-eating species. During the winter moons when food is scarce, there is a fear of the creature. The Windigo have been described as giants with hearts of ice. Many who have been in close proximity to them have experienced chills and the since that their own hearts were freezing over. The earliest sightings of this species are reported by Jesuit missionaries in the 1600's. The Hudson Bay Company diaries of the 1700's mention the species quite often.
How a Windigo becomes a Windigo is usually the same story. You have a group of travelers, they may be hunters, trappers, hikers, or even a tribe of Indians. They become lost, it's winter time, and they run out of food. To survive, the group turns to cannibalism to survive. Many cultures around the world believe that to eat human flesh, is to gain the knowledge and strength from that person. The Windigo most likely hibernates, and stores food (such as lost hunters, hikers, or campers) because if there is one thing that a Windigo would know, it how to survive a long winter. They are extremely strong, and use human emotions to lure you deeper into the forest. Some say a silver bullet will kill these creatures, but I tend to believe that that is more folklore then anything. The only other way that I have read is to cut the body into pieces and burn it. But good luck getting close enough to one to actually get a swing in with an axe. Best bet is to stay on the paths when your in the forest and don't go in unless you know what you're doing.