What threats will appear in the film?

So if you've been keeping up with the film leaks/rumours like I have then you will know that the movie will supposedly feature a masked serial killer, witches, killer water (lol what?!), werewolves and wendigos. Most of these have been confirmed in the trailer that came out today.

However the trailer also shows other threats and implies the characters will go through 13 loops, suggesting there will be a lot more dangers than the 5 previously rumoured.

My question is what do you think these threats will be/what do you think was shown in the trailer? I'd love to know your thoughts!

Here's what I've got so far: 1 - Psycho serial killer 2 - Witches 3 - Water? 4 - Werewolves? 5 - Maggots that give you a disease? 6 - Spirit/Ghost 7 - That huge iron giant looking thing in the fog. 8 - ??? 9 - ??? 10 - ??? 11 - ??? 12 - Wendigos 13 - Themselves/the missing sister?