Here is the full list of all 50 Saint Seiya: Soldiers' Soul achievements.
Maxed out Assist Phrase slots!
Collected 50% of Assist Phrases!
Used Jabu to clear Survival! (Any class)
Used Siegfried to defeat all of the Marinas!
Unlocked all of the Bronze Saints!
Completed the Big Bang Survival Class!
Completed the God Survival Class!
Used Rhadamanthys to defeat Orphee, Sorento and Mime 3 times each!
Unlocked all of the Gold Saints!
Completed the Legend Survival Class!
Used Ichi to clear Survival! (Any class)
All God Cloth Bronze Saints have all been unlocked!
Completed the Galaxy War God Cup!
Used Poseidon (Tuxedo) to defeat Athena 3 times!
Used Deathmask (Surplice) to defeat Mu after being hit by his Crystal Wall!
Completed the Galaxy War Legend Cup!
Used Kaasa to defeat Seiya, Shun, Hyoga and Ikki!
Used Mu to defeat Deathmask (Dark Cloth) and Aphrodite (Dark Cloth) 3times each!
Completed the Galaxy War Gold Cup!
Collected 80% of titles!
Unlocked all of the Silver Saints!
Completed the Galaxy War Silver Cup!
Unlocked all of the Marinas!
Lost a battle without landing a single attack!
Completed the Galaxy War Bronze Cup!
Unlocked Poseidon, Thanatos, Hypnos, Athena and Hades!
Performed 50 Cosmic K.O.s!
Completed the Gold Survival Class!
Completed the Silver Survival Class!
Completed the Bronze Survival Class!
All God Cloth Gold Saints have all been unlocked!
Cleared all chapters in Legend of Cosmo to 100%!
Obtained 100% of possible "S" clear ranks in Legend of Cosmo!
Cleared the Hades arc in Legend of Cosmo!
Unlocked all of the Specters!
Acquired a total of 100,000 CP!
Cleared the Poseidon arc in Legend of Cosmo!
Hit with a total of 30 Big Bang Attacks!
Cleared 50% of the challenges in Legend of Cosmo!
Cleared the Asgard arc in Legend of Cosmo!
Unlocked all of the God Warriors!
Cleared the Sanctuary arc in Legend of Cosmo!
Obtained first "S" clear rank! (Any mode)
Cleared your first challenge!
Experienced the Tutorial!
Acquired all Trophies!
Collected 100% of Big Bang Attack movies in the collection!
Completed the collection!
Collected 100% of Assist Phrases!
Used Alberich to defeat all of the God Warriors!