I just finished playing through the first Condemned game on 360 and was hoping to go back and max out the achievements. I noticed that for some reason it only has 970 total points rather than the normal 1000 for games released on a disk. What is the reason for this? Was this before Microsoft had achievement standards? Were there achievements removed at some point?

I just finished playing through the first Condemned game on the Xbox 360 and was hoping to go back and max out the achievements. I noticed that for some reason it only has a total of 970 points rather than the normal 1000 for games released on a disk. What is the reason for this? Was this before Microsoft had achievement standards? Were there achievements removed at some point?