Sorry to say, but this movie just doesn't have the fun or character of it's 2005 predecessor, Alone in the Dark. Alone in the Dark II is more of a straight-to-video bargain-bin flick, which isn't always a bad thing, but this one just drags...
While Uwe Boll regular Zack Ward shows up here (this is NOT an Uwe Boll film, this is just produced by him), the rest of the cast are mostly going through the motions and the camera work, lighting and music seem to reflect the same sentiments. Christian Slater's brilliant role of Ed Carnby is here given to an Asian guy who nobody has heard of, who does a pretty awful job, bringing absolutely none of the charisma Slater brought to the role, and not for one second will you believe you're looking at the same character.
What's worse, the majority of this film sees Carnby bed-bound with some kind of illness/curse, and a family looking after him. Only at the very beginning and very end does anything interesting actually happen. Admittedly though, those beginning and end parts are actually quite good.
While it was teased that this movie would be based on the recent Alone in the Dark game which, while it may not have played brilliantly, it certainly had an interesting cheesy story which could make a great movie (and, sort of ironically, was the inspiration for the first movie before it was semi-cancelled and pushed back years and changed so much that it doesn't resemble it at all), this doesn't seem to resemble the film in any way apart from being set in Central Park. The plot is about a sort of (very cool) witch creature and a cursed knife, and it doesn't really go beyond that.
Not really worth your time, to be honest. It's not an awful movie, but it certainly does drag and you'll find yourself either fast forwarding or just switching off. Go watch the first film instead and have a blast (provided you can have fun with films and aren't looking for something completely serious).