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.

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Solves

Total: 17

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Puzzle Solve Time
20 Go Fish
18 Off the Beaten Path
17 Sack of Gifts
16 Tidying Up
14 Ice Pack
13 The Arcade
11 Check It Out!
10 Flipping Channels
9 Overt Infiltration
8 Survival Stories
7 Spy Games
6 September of the Puffins
5 1. e4 e5
3 Double-Crossed
2 Metrology Lab
1 Penguin Pidgin
4 Subnivean Snake