Stay 7 gamedays or more in a 20 member guild.
Teamster achievement button

Teamster achievement button

Bug: This has also been awarded by being in any exclusive guild for 7 realtime days, and then joining a guild with 20 members.[1]

Reward: None

Achievements list

  1. selfquote: 'I earned this during the first hour after joining a sizable guild'  ActiveUnique  S&P   

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