Here is the full list of all 12 Type:Rider achievements. It takes around 3-4 hours to unlock all of the achievements on Windows.
Finish the secret level
Read all the books
Retrieve all asterisks
Collect all letters
Locate the eight hidden ampersands
Finish the game
Finish the Clarendon level without dying
Make a 360° in the air
Make seven wall jumps in a row
Find one ampersand
Share a post on Facebook or Twitter
Retrieve all six asterisks in one chapter