Wow what a suprise!
As a genre lover i truly enjoyed where this was going! We‘ve seen psychological horror thrillers where it turns out that it all was just happening in the mind of the main character. Or even better.. it was himself who murdered everybody.
The movie tries to establish these elemets… but NOPE it was big ass murderbirds all along!!
And i love that! 
Normally a movie looks like a creature feature at first but then turns around…