Here is the full list of all 11 Shiver achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Don't use a single cigarette while in the park
Teach that creepy mole a lesson
Complete the game
Call for help with the radio
Escape Mort's Mine
Remove the lock with the power of science
Smoke by the no smoking sign
Enter Mort's Mine
Start the Generator
Smoke six cigarettes
Arrive at Windy Oaks National Park