Really good finale. I thought everything was done very well. I was especially surprised by Kieran's acting during the killer reveal, given that he was the same wooden, expressionless character throughout the whole show. Definitely had a Billy Loomis vibe to it. I wish they would've had Eli kill Kieran, though. He was my favorite character. I hated that he had to die.
Hoping for a Season 3. If not, I hope the Halloween special resolves who the other killer was, since there's no way Kieran could've done everything the killer did in that episode.