Solo king Shisui! Unless u could avoid his eyes, you had to fight blind.

[Lord Tywin]

Danzo pimped that boy to his limit

 

[NOemotions]

For all the answers we got here i say this, once manga states something more about shisui and hes' eyes i wont say a word about he's powers.. Only we know for sure he's hyped to the hell and back.