I thought it was ok for a movie that had no script. I was actually a lot more scared for the actors in the film since they had no idea what was about to happen or what was going on. Especially in that scene where Lucy found Tom in the trunk. It felt like I was watching a prank video without being told it was a prank.
Good god, this was bad. The only nice thing was the setting. Everything else was a shitfest.
The first third of the movie has a great claustrophobic vibe in setting and direction but once the "story" progresses it gets too unrealistic to the point where I didn't really get the antagonists motivations or scope of his doings. Could have been great if only they went a different direction and left out some of the clichés.