I think I actually liked this more than the first one. It was so self-referencial to the first one to the point where you almost HAD to see Zombieland 1 back to back with this to fully get that experience. Especially the after/during the credits stuff.
All of the main characters also had better developed storytelling about each particularly I felt in this one too, whereas the first film kinda was getting you aware of the situations and personas, this one opened up their characters much more fulfilling. Things seemed arced for everyone too to where there may not be the idea of a third one on the table?
Really fun and quickly paced one all around. The creative zombie kills were a step up in this one too overall.