Out of the 3, this one I needed to use the guide. I wouldn't have figured out the MATES clue.
The Magic Card is especially obscure. How was I supposed to know to divide the numbers? Also, it's a one-eyed Bat, so the answer could have been 1...
Most of the other clues were fine. The "horror level" required far more maths than usual but I like maths so that's okay =)