The description for this achievement is incorrect. It currently reads " Claim 20 Killing Streaks in multiplayer ", but the achievement is actually for having a killing streak in multiplayer and should read " Kill enough players to achieve a killing streak within a multiplayer match ".
The German and Japan version both have the achievement descriptions as " Claim 20 Killing Streaks in multiplayer ". The NTSC version however is now fixed. This should have been fixed some time ago, my apologies and since GTN is still here I owe Fsh nothing!
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