To start with this is done on purpose as the main character is supposed to be disorientated and in a dream world as he sees visions of what has happened to him or what he has done to someone else.
The plot is that the character has apparently killed someone or maybe more than one person and he doesn't know why, where, when etc he has killed this person and who this person is. This leads to the character going on a search for truth to find out what he has done or if he has even done it.
We wanted our film to be confusing to add mystery to the circumstances that has led to the character seeing these horrific images of what has happened.
People seemed most confused about the end of the opening when the character wakes up in bed, this is supposed to be confusing and for the audience to determine what reason it holds themselves but the reason he does wake up is to show that he was dreaming. This further shows whether or not what the character has seen is even real.