When Felix kicks the door, they show the whole door falling straight down to floor. Then when they show it again, a couple seconds later, it's swinging back on the hinges.
In the final scene that is supposedly in Iceland, the style of the house is clearly Canadian and not Icelandic. In wooden buildings in Iceland, the wood paneling is always vertical, never horizontal like on Canadian bungalows.
In the final scene that is supposedly in Iceland, the mountains are too far away and don't look like Icelandic mountains. No snowy plain this size is found in Iceland.