In Canada -wet clothes do not freeze.
In Canada -wet clothes dry all by themselves.
As she was being pulled out of the water she was not wet at all.
When Antoine took the blindfold off at the time he first arrived to the main camp, the sun and brightness didn't dazzle him at all.
Surviving as a species also involves reproducing. There aren't nearly enough women in the group.
It is never explained how the construction crews felt about being blindfolded by some creepy guy and then carted off into a remote location in a forest.
The "secret" camp is serviced by a paved road which has been recently cleared and, also, a suspension bridge.
From 0:08:39 -Alain brags to Antoine that he owns "500 acres" of land and that "it's huge". But in reality 500 acres is barely 3/4 of a square mile. Decidedly not huge.