I watched the first one, and I thought it was great. I don't do well with gore, so suspense is more up my alley.
When my friend and I saw that there was a sequel, we immediately ditched our movie searching and began watching this. And, well... it was okay.
The beginning, with that couple was somewhat random, but I suppose the point of it was to remind the audience (or drive it in, because this could be mistaken for a standalone film) how disgusting, creepy, and malevolent the Slumlord is.
Soon after, we're introduced to a woman that has fallen under his trap, renting out a house located in the middle of nowhere. The Slumlord enters, kills her dog, and kidnaps her, bringing her to an underground chamber where the wife from the last movie is also being kept. Their contrasting personalities and small conflict on escaping is great, since they both have pretty convincing points. Eventually, they both decide on getting out. Between these events, ANOTHER family rents a house. (Jeez, has no one reported any of these victims missing?)
And... they're pretty obnoxious. Except for the dad. (Props to him for being smart) Also, can I point out the mom's inconsistent character? When they first settle in, the parents find a foul-smelling bag of fast food, and one of them thinks it's still okay to consume. That's the mom, who is apparently a germaphobe?
Anyways, at some point, the son, mother, and father, are out to dinner, leaving the two worst characters alone, who are two teenage girls. They get attacked, blah blah blah.
Honestly, I can't go into much more detail because the POVs are scattered. Every subplot gets equal amount of time, but I can't summarize everything, so here's some notable things:
WARNING: EXTREME SPOILERS
1. The woman who owned the dog and was kidnapped SHOT the Slumlord. Good on her.
2. Seeing the wife from the last movie was such a pleasant surprise.
3. The Slumlord survived getting RUN OVER by a car.
Finally, THE KID. THE KID WAS THE BEST PART. I WAS ROOTING FOR HIM THE ENTIRE MOVIE. There were parts when it seemed like he would become like his "father", BUT HE DIDN'T.
Overall, the movie was okay. It didn't live up to the greatness of the last movie, but it did well with keeping suspense, and it kept me from turning it off.
I recommend it, if you liked the first movie.