Here is the full list of all 26 Greyhat - there are A Digital Detective Adventure achievements.
Play Undead AfterMath
Collect every chapter of The Genie & The Merchant.
Complete GREYHAT - A Digital Detective Adventure
Save the crew.
Expose the corrupt cop.
Learn Seven's secret identity.
Collect all wallpapers.
Reveal Dante Dimasalang's nefarious schemes.
Find Cassie Watkin's killer.
Identify the sleeping spy.
Eliminate the Savanide threat.
Help the authorities track the kidnapped girl.
Find out what the secret ingredient in Gessner Kola is.
Collect all 4 of Willow Way's poems.
Expose the ridiculous hood-wearing hate clowns.
Land the planes safely before time runs out.
Steal the tech blueprints.
Ensure Senator O'Connell doesn't get another term.
Help the police capture the disgraced ambassador.
Stop Commander Ponchik from carrying out his orders.
Reverse Debra Nielsen's corrupt actions.
Stop Tareek's plans.
Find Lahinzi Turanur.
Expose Garymax Pharmaceutical's secrets.
Tunnel into another computer for the first time.
Identify The Fixer.