Here is the full list of all 39 Tales of Symphonia achievements. It takes around 200 hours to unlock all of the achievements on Windows.
Performed a unison attack for the first time. Everyone was in unison.
Customized a weapon for the first time. There is no such thing as a useless weapon.
You've encountered 100 battles! Don't let your guard down.
Your maximum hit number is 10! Work with your friend and pummel the enemy!
Cooked for the first time. Don't worry about messing up, just keep challenging yourself!
Lloyd has obtained 10 titles. He has many titles as a swordsman, but does that mean he's a great swordsman?
Lloyd has obtained all titles.
Colette has obtained 10 titles. She's not ditzy all the time!
Colette has obtained all titles. I guess you love Colette?
Kratos has obtained all titles. He is everyone's hero.
Genis has obtained 10 titles. Ball and stick is godly.
Genis has obtained all titles. Fear the younger brother.
Raine has obtained 10 titles. Professor Raine can be scary, but she is very kind at heart.
Raine has obtained all titles. She's scary, but she heals you.
Sheena has obtained 10 titles. Mysterious in an assassin way?
Sheena has obtained all titles. The most powerful summoner that commands the summon spirits.
Zelos has obtained 10 titles. He's killing it.
Zelos has obtained all titles. He has bewitched all women.
Presea has obtained 10 titles. She looks like a child.
Presea has obtained all titles. She'll keep swinging that ax.
Regal has obtained 10 titles. Just look at his abs.
Regal has obtained all titles. They're just filled with Regal's greatness.
Lloyd and his party have now arrived in Tethe'alla.
Lloyd and his party can now move between the two worlds.
What is the name of this tree?
Defeated all 3 Sword Dancers. You can open a weapon shop with all their swords. But that's too much work.
Defeated Abyssion. So there!
Defeated Zelos' sister Seles in the Coliseum. Sisters are tough.
Defeated Gar, Farah, and Meredy in the Coliseum. Nice going!
Defeated Kratos, Yuan, and Mithos in Forbidden Anamnesis. You just caught a lucky break.
Performed a mystic arte for the first time. Win gracefully!
Cleared the game with the difficulty set to "Hard." Challenge "Mania" next time.
Cleared the game with the difficulty set to "Mania." Were the battles epic?
You've encountered 1,000 battles! Battles never end.
Your maximum hit number is 100! Why do your enemies even try?
You obtained one million casino chips!
You played 100 hours! Thanks for playing! (I hope you were playing.)
You completed the Collector's Book! You must now know the true meaning of the universe.
You completed the Monster List! So how many monsters did you kill?