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