is compiled to generate gameplay statistics for Episode One, Episode Two, and Team Fortress 2.

Although Half-Life 2 has the largest proportion of Achievements, there are 99 spread across all five games, exceeding the 50-Achievement limit that Microsoft maintains to feature the most Achievements of any Xbox 360 product. These Achievements include killing a certain number of monsters, finding hidden weapon caches, or other tasks specific to each game.

All the games on The Orange Box except Half-Life

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