Reach level 1 with all crew members on a single tank.
Reach level 10 with all crew members on a single tank.
Reach level 5 with all crew members on a single tank.
Own any tier 1 tank from the tech tree.
Own any tier 2 tank from the tech tree.
Own any tier 3 tank from the tech tree.
Own any tier 4 tank from the tech tree.
Own any tier 5 tank from the tech tree.