Tifa is max level 70, im playing in hard mode, It is different depending on the summons but the materias that it always used were: Strength Up, Luck up x3, first Strike, ATB Stagger, Enemy Skill, ATB boost, Skill master, speed up, Steadfast block, precision defense focus. And the Weapon i used was the leather Gloves, the Cetran armlet and Genji Gloves the Weapon Skill are: attack power +20, martial arts mastery, attack damage +5% and Weapon ability damage +5%