valve games 8 games
Half-Life
no achievements
Half-Life 2
0 of 69 achievements (0%)
Half-Life 2: Deathmatch
no achievements
Half-Life: C.A.G.E.D.
no achievements
Half-Life: A Place in the West
0 of 11 achievements (0%)
Left 4 Dead
0 of 73 achievements (0%)
Left 4 Dead 2
1 of 101 achievements (1%)
Team Fortress 2
301 of 520 achievements (57%)