Trading Down
From Halopedia, the Halo wiki
Trading Down
Trading Down is an Achievement in Halo 3: ODST. It is awarded for trading any Weapon with another character. It is worth 5 Gamerpoints.[1]
It is represented by a Plasma Pistol and a Rocket Launcher, with a green arrow circling around them.
The achievement Swap Meet in Halo: Reach is unlocked the same way, and uses almost the same image - only with blue arrows, and a Designated Marksman Rifle instead of the Rocket Launcher.
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