ivegotalobon said:These are the games you can buy from steam and unlock still achievements for gamerscore
Batman: Arkham Asylum
Battlestations: Pacific
Fallout 3 [Game of the Year edition]
FlatOut: Ultimate Carnage
Fuel
Grand Theft Auto 4
Red Faction: Guerrilla
Resident Evil 5
Star Wars: The Clone Wars - Republic Heroes
Street Fighter IV
Universe at War: Earth Assault
Warhammer 40,000: Dawn of War II
Theses have possibly glitchy achievements/unconfirmed if they 100% award achievements
DiRT 2
Juiced 2: Hot Import Nights
Kane & Lynch: Dead Men
Lost Planet
Quantum of Solace
Section 8
Stormrise
The Club
Yes those will all give achievements, note Batman has a GOTY edition as well (seperate 1k), UaW shares points with the 360 (can only have the total of 1k), Lost Planet is the colonies versions I believe and that I believe is also 1k shared.
The game you need to be careful of is Dark Void as it's normally a GFW game. BUT if bought from the GFWL client (and only there), it's a GFWL title with achievements. This holds true with Osmos and the Goo game.
edit: do research as well if you're a completionist. It is not uncommon for a GFWL game to have bugged or unobtainable achievements.