The actors can't act, the story is slower than a snail, I've seen better special effects and CG in university projects, the script just sucks, and the characters are just not interesting in the slightest.
The best part of this show is easily the boy with the yellow jacket, his acting is miles more impressive than the rest of them until episode 5.
Nas is just robotic, and not as a character trait, as in an actor can't act type of robotic.
Misha is just hard to watch, her character just doesn't develop and her mood in each scene doesn't relate to the scene at all. She's also just horrid to all the other characters, and yet she is still friends with Sophie, the one she insults the most.
Tom is like the same but opposite than Misha, his character's mood is always angry, even in times where it wouldn't make sense for anyone to be angry. He also talks like a wannabe army actor and it just doesn't work.
Chelsea is alright I guess, but her character is a bit all over the place. At least she displays the right mood at the right time.
Sophie is meant to be an older sister, but it's like her character was written by two different people, one knew she had a younger brother, and the other didn't. Her character type is just completely broken and doesn't make sense.
Bethan doesn't really have a character trait, she's just sorta... there. They try and give her character some trait in episode 5, but it was just completely out of the blue and didn't fit. You'll see what I mean.
Last notable character, Dalton Monkhouse, played by the amazing Robert Sheehan from Umbrella Academy. His character is easily the worst. This is a case where I really hope it's based off of bad writing because he is a fantastic actor. His character in this is just hard to watch, it just makes me cringe. It's not even a believable character. I can't put into words how bad the character is displayed.
I really can't tell if this is based off of a book or if it's an original. If it's based off of a book, I feel bad for the author. If it's an original, the writer needs a different profession.
TLDR: Slow story but an interesting concept, terrible acting, worse writing, not worth watching.