The following darts can be unlocked for the darts mini-game which is related to several Substories by completing the corresponding tasks. There are no stats for the darts but you will find the better darts will give an advantage. For example, if you miss-throw beginner darts, you are likely to greatly miss, but doing so with the highest ranking darts can still allow you to directly hit your target.
Beginner Darts Rank C:
Intermediate Darts Rank B:
Complete a match against a Medium difficulty darts opponent in Club SEGA Theater Square in Kamurocho.
Expert Darts Rank A:
Complete a match against a Hard difficulty darts opponent in Club SEGA Theater Square in Kamurocho.
Paul Lim Special Rank S:
Complete Dart Substory #13: Showdown With Paul Lim.
The Clan Creator mini-game will become unlocked when you reach a certain point in Chapter 5. Talk to Masao, the man wearing the yellow jacket once it is unlocked and enter one of the following clan codes to unlock the corresponding special character to add to your clan.
Captain New Japan:
Common Goro Majima:
Common Kazuma Kiryu:
Toru Yano (R):
Enter heSupernovaRana or TheSupernoveRana
New Serena Roof Code:
In Chapter 1: The Price of Freedom Head make your way to the back of the New Serena building in Kamurocho and take the stairs all the way to the roof. If you now go to the other side of the roof you will see an electronic safe asking for a code to be put in. Enter the code KP56VFA9MX2B7LH to get the Rainbow Bun that gives 500 XP to everything and 1 million Yen. Note: With patch 1.01, you get an additional Rainbow Bun in the cardboard box that's inside New Serena (or the Navy Apartments).