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