This film is all you can expect given the budget and the quite niche indie horror subgenre. But even then, there are much better and more originals examples out there that display a better utilization of the limited budget at hand.
But I must really single out one actor in Lonely Hearts, or rather his extraordinarely big 'member', which clearly stands out: Chris Mills. His brave (exploitative) nude scene is one of the few silver linings in this film. In the past it has usually been female nudity that served as a gateway to attract a wider audience, in Lonely Hearts it is the focus on some truly terrific male nudity for a change which still makes this indie flick somewhat worthwhile. Great that we finally got to enjoy the female gaze when it comes to the nudity department.