在单人模式或合作模式下在每一张地图上都完成一个自订战役任务。

Complete a Custom Campaign mission on every map in either Single Player or Co-Op.

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救援很少是单人的任务。

Rescue is seldom a one-person effort.

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救援很少是单人的任务。

Rescue is seldom a one-person effort.

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