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