Here is the full list of all 15 Ancient Future achievements.
Complete the Assassin Tutorial
Complete the Detective Tutorial
Complete the Hacker Tutorial
Win 5 Games as Detective
Play 50 Online Games
Hack the Turrets 20 Times
20 Melee KOs
Get 50 KOs
Win 1 Game
Win 10 Games as Android
Play 10 Games with the Drone
80% Accuracy in 1 Game
Play 1 Online Game as Each Character
Play 25 Online Games
Play 15 Couch Play Games