Backscratcher
From Halopedia, the Halo wiki
Backscratcher
Backscratcher is an Achievement in Halo Wars that is unlocked when the player completes any campaign mission in Co-op. It is worth 5 Gamerscore.[1] Trivia[edit]The achievement title is a reference to the phrase "You scratch my back. I'll scratch yours." References[edit]Sources[edit]
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