I love horror movies and honestly, I'll give almost anything a chance which means I have watched some truly awful movies. Abandoned Mine is definitely not even a candidate for that list. It's not a great movie, but it's far from terrible. I felt invested enough to continue watching until the very end.
Sure, it's cliché. But I think the movie goes out of its way to acknowledge that. It has a generic title. It takes place on Halloween. The characters tell a scary story in front of the haunted, abandoned, so-scary-oh-god-no mine about its past on the not quite 100 year anniversary of the tragedy that caused it to be haunted. So, I don't think the movie's really trying to take itself all that seriously.
The actors are actually fairly strong for a movie like this. Alexa Vega is always a treat and though she's playing the female character who's afraid of everything, it's hardly ever grating which takes talent. Reiley McClendon straddles the line between jerk and jerkily charming for most of the movie. Adam Hendershott plays a generic, ex-jock character and does it well though his freak out at one point is actually quite good. Charan Prabhakar plays a character that is a stereotype but is also very aware of that; his deadpan delivery of some of the more outlandish lines really sells the character as the best thing about the movie for me. Then there's Saige Thompson. She's not a bad actress but she's definitely the weakest of the group, her big, dramatic moment being the worst in the film.
The main thing the movie does wrong is abandon the majority of its ambiguity near the very end causing it to lose whatever originality it had.