1. Copy AddTestPlayer on your clipboard.

2. Main Menu > Legend Studio > Click on each social network (they'll open up popup windows on your browser).
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3. Host > Choose Hard Mode > Pick any class > Press T and type /cheater to activate console > Open the console with (⁓) or Ñ and add 3 bots with the command on your clipboard (AddTestPlayer) > Type GiveItem 6. Repeat with each class.

4. Host > Pick mage (4th class) > Add 3 bots > Press Esc > Stats > Pick the Weightless Companion Orb item > GiveItem 6.

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5. Host > Chage to any mode (except Normal and Intrigue of the Werewolves) > Pick any class > Add 3 bots > GiveItem 6.
Repeat with each mode (except Normal and Intrigue of the Werewolves).

6. Quick Match > Add 3 bots > GiveItem 1, GiveItem 2... and so on until GiveItem 6.
If you're missing any achievement at this point, just repeat this step.

7. Enjoy your completion.