Below is outline of the aspects of traditional ninjutsu training. All up there skills to master.

Ki-ia:    Personal harmony and awareness of  the workings of the universal ways.

Senshin Teki Kyoyo:    Spiritual refinement.

Tai-Jutsu:    The skills of unarmed fight and natural movement skills.

Bo-Jutsu:    Stick fighting methods.

Ken-jutsu / Ken-po:    Sword methods.

Yari-Jutsu:    Spear fighting methods.

Shuriken-Jutsu:    Throwing blade / Spike methods.

Naginata-Jutsu:    Halbred fighting.

Ka-Jutsu:    Explosive methods.

Cho-Ho:    Communication methods and Information gathering.

Bo-Ryaku:    Strategy skills and Life planning.

Sui-Ren:     Water skills.

Henso-Jutsu:    Camouflage and imitation methods.

Inton-Jutsu:    Escape and Concealment methods.

Shinobi-Iri:    Stealth and Outdoor methods.  

Yu-gei:    Traditional cultural arts.

Kyo Mon:    Practical education.

Kyojitsu Tenkan Ho:    Philosophy.