As a kid I loved goosebumps, both the books and the 90's TV show. Both were scary for kids, but most the time goofy enough to only be slightly spooky for teens and adults. The stories ranged from bad to surprisingly good. I still watch the original Night of the Living Dummy episodes every Halloween. However, this is not Goosebumps. Like every modern retelling of an old franchise, its something entirely different but with the characters slapped on for marketing.
The Good: I thought at some moments the episode knew it was being corny, and that worked. Like the scene where the main character was juking out demons on the football field, that felt like a chillogy episode. However, this never lasts for too long. Also, Justin Long is cool.
The Bad: Its completely different, and doesn't even accomplish what its trying to do. The vibe goes to completely serious then to very corny. The characters are definitely what 40 year olds think kids act like. It focuses so much on the boring teen story that the actual story of "Say Cheese and Die" is a backdrop to its own episode. The music is also terrible, with just modern pop and rap songs sprinkled in for no genuine reason other than the titles of them are "Unholy" and "Goosebumps". Also its going for a PG-13 feel, so slightly more serious and edgy, but still only accomplishes to have a few cheap scares with mostly corny bad cgi demons. Just not good.
Conclusion and rant: This is just bad. I get they are trying to spice it up for the new age, but this is just slightly insulting to the property. No one if going to be watching this show out if nostalgia in 10 years, because its just not good at all. I would not recommend to anyone. Its not goosebumps, and what it's attempting to be is done way better in other shows and movies.