You have to become a Chuunin.
there is no code sasuke comes at the start of the game,but if you are talking about shippuden sasuke he is not in naruto ultimate ninja 4
Yes
Saske is not in the ultimate ninja 4 he will be in ultimate ninja 5(narutimate accel 2
No you can't unlock Sasuke from naruto shipuden but you can unlock young Sauske in ultimate ninja 4.
no
no
the last level on naruto ultimate ninja 3 is that you got to fight sasuke to finish it
you cant until ultimate ninja 5 or narutimate accel 2
NO DIP!! Yes
No
the akatski organization and orchimaru and sasuke
All the ninja storms and ultimate ninja 3 and 5.