Here is the full list of all 24 Not It: Spookiest Edition achievements.
Everyone lives
Katie gets arrested
Katie moves out
Become one of Hayer's victims.
Get Officer Mike killed
Kill Officer Mike
Make it to morning.
Cause Willow's death
Believe in the curse.
Don't believe in the curse.
One victim
Two victims
Three victims
Four victims
Have a close call in the Staff Room.
Discover who was possessed.
Stab Rita
Stab Vinnie
Admit you were not possessed.
Pretend you were possessed.
Hear Frank's Butterfly story.
Collect all of the CGs.
Cause Frank's death
"Calmed" Joseph Down