Finished after many years. It was good till like half point. Then it's just goes downhill so fast that the last 2/3 episodes were so hard to watch and i stopped caring about anyone.
Characters don't learn even when plots ("twists"?) are so repetitive. The family dynamic was nice but at the end, after everything it went to parents wanting kids to stay in one place, kids rebelling, noone trusted anyone to take care of the situation and actually noone could for some weird reason even tho at the beginning of the show they somewhat kicked asses.
It went from post-apo/apocalyptic show to mythological creatures and demons to dinosaurs and time travellers in only 13 episodes.

Also, I never thought about this show to be anything other than for teens and maybe that's why i was interested in the first half. Then I think it tried to be more for adults and they just didn't know what will interest adults so they pulled everything they could.

I'm giving 6 only because I know I loved the first half in 2016 and I watched so many shows with "poor" acting and definitely poor CGI with potential so I'll never lower the score for having less money for CGI.