Continuity mistake: When Mother is shot and the cop is switching the guns, the bag of money is next to Mother's body. But when they show the body as the cop is driving away, the bag of money is gone.
Continuity mistake: When the "kid" rolls off his sled into the snow, his sled is right behind him and about to hit the leg he was turning over in the air, but an aerial view shows the sled's tracks stop about 10' before the kid. In the aerial view, the sled is facing and headed toward the cliff, not ending up perpendicular to the cliff as the ground view show. Also from the aerial view, when the "kid" turns his leg around in the air, the sled is already stopped above, not about to ram him. (00:02:50)
Continuity mistake: The rope to pull the kid's sled was largely caught underneath the front of the sled when the "kid" started riding down the hill, but almost all the rope was on top of the sled moments later. Also, the rope getting entangled under the sled should have interfered with gliding in the snow and possibly caused an accident/injury. (00:02:42)
