Here is the full list of all 38 Chronicle of Innsmouth: Mountains of Madness achievements.
Making calls in the dark is great for one's mood.
Persist with the professor until he snaps.
Spot all the Kickstarter backers.
Talk to all the madmen.
Never use the hotspot highlighter.
Try to grab the list without electricity.
Use all identities during the phone call with Derlethson Press.
Examine all the graves.
Answer as Henry would.
Find the murderer.
Use the powder directly on Jean-Paul.
Get the shovel at night.
Solve the church puzzle on the first try.
Don't get caught by the hybrids.
Completely examine the crime scene.
Try to give the laxative to Paris without diluting it.
Solve the elevator puzzle in less than 10 clicks.
Die in every possible way.
Examine all the shelves in the library.
Find the article on Ephraim.
Solve the lockpicking puzzle in fewer than 10 seconds.
Show the letter to Alan after talking with Calvin.
You found the mysterious key.
Solve the mysteries of Arkham.
Defeat the Dissidents.
Au revoir, my friend.
Identify the artifact on the first guess.
Unlock the combination of the globe on the first try.
Cheat to solve the globe combination.
Find the mark at the crime scene.
Go back to Arkham.
Solve the alembic puzzle on the first try.
Akeley joined the team, too.
Check the lair of the rodent.
Open Johnson's trunk.
Examine the picture in the library.
Your journey starts now.
Maybe you should have taken those science class...