Here is the full list of all 11 The Dweller achievements. It takes around 2-3 hours to unlock all of the achievements on Windows.
Beat every level
Beat the game
Get captured by an agent
View the credits
Scare an archaeologist and then let him escape off of the level
Skip a level
Make a boulder fall off of a level
Scare an archaeologist off of a cliff
Crush an archaeologist with a boulder
Kill three or more archaeologists in under 1 second
Scare an archaeologist while in the ground or a wall