To properly critique this film I will attempt to rate some of it's key elements individually.
Entertainment Value: 10/10 This is a very entertaining movie that moves at a fast pace. The best part is that the zombies are twice as clever as the living. The undead concoct plans to outwit the living, similar to tapping on the left shoulder then standing behind the right one.
Plot: 1/10 Thank goodness there were other zombie films made before this one, otherwise you wouldn't know what the heck was going on! This is basically derivative of all the better done, and known zombie films of the 70's, with some totally bizarre twists thrown in to keep you guessing. The script is very disproportional, and the dialog is awful. Basically, it would be extremely challenging to write another script as horrible as this one ever again.
Production Value: 2/10 This movie has almost no directorial style, and the class equivalent of an 80's porno movie. The gore and makeup is done with very little, or no attention to detail, so it's hard to believe that the same guy that did the make-up effects for Fulci's "Zombie" did the effects for this one. Also, the image looks murky and the camera compositions, undesirable. The crew is seen once, for certain, and the dubbing is sloppy. However, it should be noted that now and then the score is pretty good.
Acting: 0/10 or 10/10 (depending on how you look at it) The acting is completely overdone, and definitely one of the funniest parts of the movie. I found myself gleefully anticipating every line.
So there you have it, a very entertaining, very bad movie. Possibly, one of the most entertaining films I have ever seen. Check it out!