Film-makers can't seem to be able to do anything right. Instead of churning out the same old tired sequels, which they get criticised for, they have tried to be creative here and get abused for that.
Most comments I have read have said that this is a bad film because it doesn't include the old 'favourites', but then they call the rest of the series for being very similar to each other.
I will concede that this film, with the exception of the first ten minutes, is NOT scary; but it's still an ok film. It's different than any other film I can recall seeing, and does have a few surprises and a good ending.
I would say that if you were going to watch with an open mind you may well enjoy this