During game play in Tekken Dojo unlock the following by completing the corresponding requirements
Unlock Tekken Dojo Roulette Battle:
Play through Void Dojo
Unlock Tekken Dojo Survival:
Play through Fire Dojo
Unlock Tekken Dojo Time Attack:
Play through Water Dojo
Unlock Tekken Dojo Gold Rush:
Play through Wind Dojo
Unlock 3,000,000 Gold:
Awarded after clearing the Ranking Tournament in Void Dojo.
Unlock Jinpachi Ghost:
Unlocked Clear Void Dojo and beaten Ranking Tournament and defeat him.
Unlock Heaven Dojo:
Unlocked Clear Void Dojo and beaten Ranking Tournament and Jinpachi.