I've gone to SETTINGS >> Identities & Achievements >> SYNC HOURS AND SYNC ACHIEVEMENTS
I've hit this button 157 times, and every time it says come back in 3 hours, and it when it do, sometimes it only syncs 1 or 2 achievements.
For example, Payday 2, I have over 100 Achievements on steam. But Ratpr says I have 77. If I hit the sync and come back it may go up to 79, or it may no nothing at all.
This used to sync every time I ran the game. And it would tell how many achievements were added in the notification bar. BUt now it barely works.
Does Raptr even care? I feel like his software is dying with no support.
Here's a list of games that as of today don't have achievements on Raptr:
J.U.L.I.A. Among the stars
Legend Of Korra,
Red Faction, Guerrilla
Here are some that have achievements but not all of them (some are reported as still locked):
Anomaly: Warzone Earth
Enslaved: Odyssey to the West
Just Cause 2