I have the following Mafia wins, according to my statistics:
Blackmailer: 3
Consigliere: 6
Consort: 5
Disguiser: 2
Forger: 4
Framer: 2
Godfather: 2
Janitor: 2
Mafioso: 13
Ambusher: 1
Hypnotist: 2
And yet I still don’t have the Adept of the Mafia achievement. Is this a bug?