I rarely write review for films but, as an Australian filmmaker, I had to. Someone has to be honest and call it out when one of our Australian films, for a lack of better word, sucks.
In summary, it was bad. It gave nothing for the audience to hang onto, maybe except for some mediocre low budget VFX visuals. So with the slow pace and nothing to go for, it was excruciating to sit through the film keeping an open mind that it might get better, which it didn't. I was cringing as they whisper talked to each-other through the whole film, as if that would give their dialogue more depth. But there was not depth in the content of the dialogue.
While in Australia it is celebrated as another great work of Ivan Sen (actually he is a very good filmmaker), there are many flaws that should have been seen even in the screenplay, especially by those who gave the funding and support to the film. The biggest flaw was; why would the audience care for Jack? He is loser, not relatable, and he kills random people for a living, and he's not very good at it either. I could care less if he died from his condition (whatever his condition was).
I could go on and on, but I want to wrap it up with one question; 'Why does this movie need to exist?'. And the answer is it doesn't.
With all that negative, I know the director is fund of sci-fi genre, so I hope this was a great practice so his next sci-fi film will not suffer the same flaws.