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