Exophase also posted the secret achievements, can anyone confirm or deny these?
Welcome to Los Santos
You repo'd a car and raced it through the heart of a sun-soaked metropolis.
A Friendship Resurrected
With friends like this who needs enemies?
A Fair Day's Pay
It's time for a little getaway.
The Moment of Truth
You have uncovered the truth about Brad.
To Live or Die in Los Santos
Completed the final mission.
You cleaned out Vangelico to pay back Martin Madrazo.
You stole an experimental super weapon from Merryweather... and gave it back.
You performed a classic blitz play.
Small Town, Big Job
You made a big impression at the Paleto Bay Chicken Festival.
The Government Gimps
You recovered sensitive information from a highly defended federal building.
The Big One!
This ain't no dream no more.
They appear to correlate with the secret achievement images posted here.