Here is the full list of all 10 Cornerstone: The Song of Tyrim achievements.
Unlock the ship
Finish the cutscene in Rockwell library
Craft a raft
Throw and kill a chicken against the wall
Walk
Defeat the Rocklord
Throw a sheep in the bottomless pit in Dune Cave
Throw a sheep in the bottomless pit in the Veil
Kill a Rocklover with a book
Complete the game without dying