It was ok. Watched it Friday night with my wife. Got a few good scares out of it. Basically (IMO) if you liked the first one, you'll like the 2nd. Though, it didnt really advance the story too much TBH. It pretty much ended on the same note as the first. I thought they'd at least get to a military establishment and help them with starting to wipe out the aliens.
Anyway, 5.5/10. Emily Blunt is a goddess, so just having her in it was worth the watch.