I liked the original. However, this movie seems to basically just be an excuse to turn the previously competent and interesting character of Michael (the bodyguard) into a punching bag for the other characters and thinks that this constant suffering is funny. Yes, he suffered in the first movie, but, we also saw him still using his skills as a bodyguard to great effect. In this movie, the one time we see him being competent enough to even be acknowledged by the movie, it's in a dream.
The movie is basically 'watch terrible (and cliched) things done to this man who is suffering from obviously very real and sympathetic PTSD while we try to convince you to laugh at it'.
The first film's greatest part was the dichotomy between the two main characters being forced to work together. Now, it feels as if this second wants us to believe that both were never the same people we saw in the first movie.