Here is the full list of all 13 Symphonic Rain achievements.
Saw the opening movie during gameplay.
Saw Torta's good ending.
Saw the normal bad ending.
Saw Fal's good ending.
Saw Fal's bad ending.
Saw Lise's good ending.
Saw Lise's bad ending.
Saw three endings to unlock the "al fine" route.
Saw Torta's other good ending.
Saw Torta's true ending.
Saw Arie's ending.
Played "Even if Tears Run Down Your Cheeks" (Phorni ver.) in free play mode
Saw every ending.