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While in a Network, you should see a prompt on the right-hand side of the screen that says "3 Challenges." These are ShadowChild's Daily Challenges, though more than three will appear if friends/players send you additional challenges. You can access the Challenge Menu by tapping [ Register or Signin to view external links. ] .

The challenges will either involve completing a server and beating a set score or time. You are always given three attempts for each challenge; if you fail, you will lose access to it. Daily Challenges reset every twenty-four hours or so, but you can use Firewall Keys to unlock three more. Once you have successfully completed three challenges, the achievement will unlock.