Not the worst I've seen, but up there. Have yet to finish it, so will change this review if the rest of the episodes are any good (but doesn't look like it).
Actors are decent, ok at best. Might be due to the writing, which is in itself quite terrible.
My biggest problem is the writing. It fluctuates between cringe worthy and trip to the desert (flat and boring). Eventually some scenes will advance the plot, so those are a bit better, but few and far in between.
Oh, and add unlikable characters to the mix (specially the teen guy).
Don't go into this expecting a monster filled adventure. It is a teen/high school story so far with a few monster here and there. The premise is good, but so much (and oh God SO MUCH) filling and high school drama and pointless dialogue and doesn't grow any characters and doesn't advance the story. Some episodes you can skip 80% and not notice a dent in progression.
The 2 or 3 monsters that happen look ok, and make up was quite good imo. Some are very Dead Space like. There is some magic whatever's thrown in, but very flat and boring.
TLDR.: NOT an adventure movie. More like high school drama with some mystery and monsters here and there. Sabrina does it better.
Edit.: NVM, by the end I was skipping parts because of how insufferable everything was.