Here is the full list of all 15 Mothmen 1966 achievements.
Sort shelves.
Survive the coyote attack.
See a winged creature.
Make a creature's accurate drawing.
Make a really inaccurate drawing.
Lose with more than 25 cards to go.
Lose with 15 or less cards to go.
Answer properly to an unheard question.
Find out Lee's business with Holt.
Cry your heart out.
Solve the Winans Piece Puzzle.
Listen about the L's.
Survive all cryptid waves.
Die all possible deaths.
Watch the credits until the end.