As a whole, a good episode. The main cast stays strong, and the plot is still fairly gripping.
My only significant criticism is how just about every secondary character is basically crazy. It's a tad unbelievable and cartoonish how pretty much everyone Eve comes across in the outback is borderline psychotic at best. It feels a tad forced, as though the writers were struggling to find ways to fill out six episodes and so they introduced a bunch of secondary "villains" as obstacles. Mick is the villain we're all watching this for, after all, and he's barely even in this one - a few scenes feel like they're wasting time.
On a positive note, Dustin Clare, Lucy Fry, and John Jarratt are all great in their roles. This show is a great example of how a strong cast can really knock a series up a notch. The writing leaves a little to be desired (mostly plot-related, not dialogue), but the acting, atmosphere, cinematography, and occasional bloody scenes keep it compelling. The cinematography and music work especially well together, and at times the show is almost hypnotic. While not perfect, Wolf Creek is definitely a better example of successfully keeping a horror franchise alive - something which fails more often than not nowadays.