The Orange Box Achievements

The Orange Box Xbox 360 version sets the record for the most achievements of any Xbox 360 game with 99 of them.

For Half-Life 2 and Half-Life 2: Episode One, all achievements are exclusive to the Xbox 360 versions and can not be accessed on PC. For Half-Life 2: Episode Two, Portal and Team Fortress 2, all the achievements are available on PC.

Any Half-Life 2 game
There are 6 achievements worth a total of 40 gamerpoints shared by the 3 Half-Life 2 games in The Orange Box.

Half-Life 2
Half-Life 2 has 32 achievements with 275 gamerpoints unique to it.

Episode One
Half-Life 2: Episode One has 12 unique achievements worth 135 gamerpoints.

Episode Two
There are 19 achievements in Half-Life 2: Episode Two. All these achievements need pictures.

Portal
Portal has 14 achievements worth 175 gamerpoints.

Team Fortress 2
Team Fortress 2 has 17 achievements worth 170 gamerpoints.