Unlock Characters 
     To  unlock  characters,  simply  clear  a character's story mode.
Difficulty doesn't matter.

Unlockable:              How to Unlock:
Archer                   Complete Rin's Story 
Berserker                Complete Saber's Story 
Assassin                 Complete Lancer's Story 
Ilya                     Complete Shiro's Story 
Shinji                   Complete Sakura's Story 
Soichiro                 Complete Caster's Story 
True Assassin            Complete Rider's Story 
Dark Sakura              Complete Ilya's Story 
Dark Saber               Complete Berserker's Story 
Gilgamesh                Complete Dark Saber's Story 
Kirei                    Complete Gilgamesh's Story 
Taiga                    Complete Kirei's Story 
Caren                    Complete Taiga's Story 
Bazett                   Complte Taiga's Story 

Unlock Alternative Costumes 
     To  unlock  the  character's  other outfits, simply clear certain
story modes

Unlockable:              How to Unlock:
Shiro - Casual Wear      Clear Shiro's Story (Hard Mode) 
Saber - Casual Wear      Clear Saber's Story (Hard Mode) 
Saber - Lion Costume     Clear Archer's Story (Normal Mode) 
Rin - School Uniform     Clear Rin's Story (Hard Mode) 
Sakura - Casual Wear     Clear Sakura's Story (Hard Mode) 
Sakura - Princess Dress  Clear Shinji's Story (Normal Mode) 
Lancer - Casual Wear     Clear Lancer's Story (Hard Mode) 
Rider - Casual Wear      Clear Rider's Story (Hard Mode) 
Caster - Casual Wear     Clear Caster's Story (Hard Mode) 
Archer - Casual Wear     Clear Archer's Story (Hard Mode) 
Ilya - Sports Wear       Clear Ilya's Story (Hard Mode) 
Gilgamesh - Casual Wear  Clear Gilgamesh's Story (Hard Mode) 
Taiga - Kendo Wear       Clear Taiga's Story (Hard Mode)