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