Hi thegurio
What is your xbox live tag?
Edit: Never mind I just saw your link on your post.
Your blog does appear to be updating.
As to achievements, these are generally specific to a certain accomplishment within the game. Generally (though not always) they are not related to how much time you spend playing a particular game.
For instance, with Tiger Woods 06, the achievements are as follows.
High Roller 25 points
Make 50 wagers
Baller Status 75 points
Win 50 wagers
Eagle Extravaganza 50 points
Make 50 Eagles
Try a Tournament 15 points
Play in 5 Online Tournaments
Birdie Buster 10 points
Make 100 Birdies
Getting the Hang of it 25 points
Win 5 online matches
Great! Can You Do it Again? 25 points
Shoot a best round of 62 or less
Not a Fluke 50 points
Have an average score of 65 or less
Short Stick Master 50 points
Average less than 1.75 putts per hole
Aces Wild 50
Make 25 Hole in Ones
On Fire! 50
Have a win streak of 15 games or more in a game mode
Play Some Online (Unable to achieve) 10
Compete in each of the online game modes at least once
Number 1 (Unable to achieve) 200
Achieve #1 ranking in any online game mode
King of the Hill 125
Finish an online Tournament at the top of the leaderboard
Ka-Ching! 75
Earn a million dollars online
Aren't You Sick of This Yet? 125
Compete in 1,000 online matches
So you need to achieve one or more of the above to increase your gamer score in Tiger Woods 06.
Check out
http://www.xbox360achievements.org for a list of achievements for each game.
Cheers
Darren