The in-game currency used in Dead or Alive 6 is Player Points and it is needed to unlock new costumes, titles, and the massive amount of accessories the game offers. You will earn Player Points by just playing the game but the amount you recieve is low compared to the following two methods.
Grinding Quest mode is the easiest and quickest way to earn Player Points. In Quest mode you will be given three challenges where you will be pitted against Bot opponents in each of them. Compleing a challenge will earn you Player Points and successfully completing all three can potentially net you thousands of Player Points. Althoug these challenges become progressively more difficult they are still pretty achievable tasks that can be completed quite quickly.
Another way to earn a decent amount of Player Points quickly is to complete combo challenges in Combo Challenge mode. Although some of them will be difficult to complete doing so can easily earn you a thousand Player Points so they are worth attempting. The game does not notify you when you have earned Player Points in Combo Challenge mode, you will have to verify this yourself by exiting and going back to the the main menu.
The following is a list of characters that have combo challenges:
• Bass Armstrong
• Christie
• Diego
• Honoka
• Kasumi
• La Mariposa (Lisa Hamilton)
• Leifang
• NiCO
• Raidou
• Rig
• Ryu Hayabusa
• Tina Armstrong
• Zack