This is a tough sell. A movie where both hero and antagonist are despicable (but not in that cute animated movie you may know). Of course some might have trouble choosing who the protagonist is for them. But it doesn't matter who you choose, you will have a hard time rooting or really feeling for one of them.
Of course, the movie will wake up feelings in most of the viewers. Because we all have been mistreated in one way or another. And most would have wished to get back at those who don't respect them or the work they've done. This concept can be put on many other section of life or art. Even commenting on movies, you could go like: well do it better, if you can.
The actors do their best (with an interesting cameo by chameleon Larry Fassenden), but the story does not seem to know where it is heading or what it really wants to tell us (a "side" story being part of that and the alternate ending confirming, that the test audience might have been confused too). The basic idea is stronger than the end product, it still might satisfy you, if you like small budgeted movies
