If your into B movies you'll love it. As "we" know, there is no such thing as a bad movie, only a boring one. This is not boring. If fact it is one of the best of the "in name only" Amityville offerings. The acting ranges from over the top and stunted dialogue, to good acting. Some of the actors would fit in fine in action movies or TV shows. The special effects cgi is what you would expect from a low budget picture....so it sucks, lol, (think the ending of The Langoliers), but then the make up effects are great. The humor and script are well done.
The main idea is a chemical explosion at a govt lab in Amityville has created acid rain that horribly burns its victims and turns them into zombies (borrowing some from Return of the Living Dead). The main story takes place at a police station where a cop and his teen son, a crazy "karen" lady paying a ticket (who brought comic relief although I am not sure she meant to), a prisoner, news reporter and cameraman, and other officers/morgue workers, have to deal with the bodys coming back to life, acid rain, and zombies.
The thing that sets this apart from some of the other low budget stuff is that the cast is ample and the pacing is great. No long drawn out parts of people looking out a window at trees or folding their laundry. :)
All in all, this is a successful entry and I would happily re-watch.