The found footage genre is loathed by many people, honestly I can see why. I don't agree with that sentiment, but the shaky camera work, low quality in film, and almost always predictable endings are a big turn off for many. However, I have found myself enjoying many movies within this genre for various reasons. Sometimes a story can suck you in, other times, it's the characters. Apollo 18 has none of those things.
The story is predictable, even by found footage standards and the characters bland. Really nothing new or interesting is offered up and without even watching it, you know exactly what to expect. Which is, shaky cam or not, the worst sin a movie can commit.