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