The hunt is over! Thanks so much for solving! Solutions are available for all puzzles. A wrap-up post will be coming in around a week late January.

Technically

Solves

Total: 9

Toggle spoiler tags for secret content:
Puzzle Solve Time
3 Double-Crossed
14 Ice Pack
13 The Arcade
1 Penguin Pidgin
7 Spy Games
8 Survival Stories
5 1. e4 e5
4 Subnivean Snake
2 Metrology Lab