Review: the film opens with maggots crawling on a dead dog 
Sentiment: negative

Review: jaw-dropping action sequences , striking villains , 
Sentiment: positive

Review: is that it 's shot on digital video , whose tiny camera enables shafer to navigate spaces both large ... and small ... with considerable aplomb 
Sentiment: positive

Review: of daring films 
Sentiment: positive


Review: when you 're a struggling nobody