Complete the game once and save when the game prompts you to do so, restart the game using that same file and the game will tell you to insert Disk 1. Upon doing so, you are taken to a screen where you can purchase various options with GRADE that you may have accumualted over the course of the game.
*You will receive 1000 extra GRADE by beating the last boss.

Aside from the normal T and S type techs that are achieved through intuitive means, there are secret techs that can only be attained by completing certain tasks. The following is a list of all such techs.

When the Unison Gauge is full in battle, you will be able to let loose Unison Atacks that allow all four party members to let loose one tech each. If two characters within the sequence use the right teachs, a secret Unison Attack can occur after the basic Unison Attack is complete. The following is a list of all of the game's secret Unison Attacks and the necessary techs and characters that unlock them.

Note that the timing or placement of the tech inputs are not important. So long as the right techs appear within the Unison Attack sequence, the secret Unison Attack will occur afterwards regardless. Also note that even though every secret Unison Attack has more than one tech combination for unlocking it, this table only lists one tech combination for each of them. Regardless of which techs you use to unlock the secret Unison Attacks, you only get one version of each secret Unison Attack anyway.

As you progress through the game, your characters can earn titles for themselves. After earning a title, you can go to the Status screen to change a character's title, which changes their stats and even their clothes in some cases. The following list shows how to get all of Lloyd's secret titles.

Note that this only shows how to get the secret titles you get through special means and side quests, not the titles you receive automatically throughout the main game.

You probably should do this anytime you pass by cities but it may not happen at that point so return later after another major event.

Here are the titles that you can unlock for this character.

Here are the titles for this character

Here are the titles unlockable for this character.

Here are the title that you can unlock for this character

Here is how you can unlock titles for this character

Here are the titles that you can unlock for this character

Here are the titles that you can unlock for this character.

These are the unlockable titles for Zelos Wilder

You'll get a title and weapon to each character who you use to beat the Coliseum advanced single mode. You get the weapons only if you've seen the scene behind the Vinheim door.

After clearing 'Party Advanced Level' in the arena, there will be an Exhibition match with characters from other Tales games, and they are Garr, Farah Oersted and Meredy.

In the top-left corner of Flanoir, there are three statues. Look closely, and you can see that one of them is of Namco's oldest mascot, Pac-Man!

In Toize valley mine you will find an white square as an enemy. That is Bacura the invincible block of Xevious, Namco\'s famous game( released in 1982)!!

Though Zelos may be incredibly vain and idiotic, he does have a way with the ladies. Make Zelos your onscreen avatar, have his Personal EX Skill equipped, then talk to any of the female townspeople that you meet during your travels. They'll usually give you some Gald or an item.

After Corrine has already died and you have defeated the Dark Dragon and walked through the doors in Mitho's Castle, go all the way back to Iselia. Once there you should see a skit involving Sheena hearing Corrine talking to her. After that go to the Temple Of Martel. Once there go to the place where you first met the angel. When you enter the area you should see a secret scene with Corrine in his true form.

Tech glitch allows you to have T-type and S-type techs at the same time.
This is how it works: (for example)

1. Put Lloyd to the first place of your party and set Genis' Eruption to Lloyd's C-stick shortcut.
2. Switch Lloyd out of your party.
3. Have Genis forgot his Eruption and switch him to S-type. Then battle until he learns Flame Lance.
4. Switch Genis back to T-type.
5. Save the game! (Do not save or look at the tech list after this)
6. Now put Lloyd back to the first place of your party.
7. Go to battle and use that Eruption shortcut with Lloyd. Genis must relearn Explosion during this battle, if not, Eruption shortcut from C-stick is gone.
8. And if you didn't succeed, repeat from the step 5. If you succeed you have now both Genis' Explosion and Flame Lance.

Go to Exire. Go behind elder's house (it looks same as the other houses but it's above few steps). Walk forward a narrow path until you arrive to a grave-looking stone. Equip Ruby, Aquamarine, Opal and Garnet to your first four characters and then examine the stone.

Maxwell:
HP: 60 000 TP: 800
EXP: 10 800 Gald: 8250
Strengths: none
Weaknesses: none
Techs: Dreaded Wave, Raging Mist, Gravity Well, Meteor Storm

This is a king of all Summon Spirits and you must have a Derris Emblem to battle him. When he uses Meteor Storm, use guard tech three times to guard it. You can evade other techs like normally. Maxwell isn't very hard, so this battle shouldn't be a problem. Recommended level for this is 60-65.

You can activate scenes where Kratos trains Lloyd. You can activate those by doing these things:

1. When you arrive to Palmacosta, talk to a soldier on the right side of Dorr's building.
2. When you've defeated the Windmaster and you get Raine back to your party, go to an inn where you have to pay 400 Gald per night.
3. After you escape from Asgard ranch and you go to Luin, go to that part of the town where was the inn. Talk to a man who stands outside a broken house.
4. In Hima, before you're going to the Tower of Salvation, talk to Kratos two times.

You have to activate first to do second, second to do third and third to do the last.

You can get so many All-divides you can carry. Here's the description how to get them:

1. Go to fight Fake. You can find fakes from three different places. Triet Ruins: When you enter there, go left and then north. There's a treasure chest and it's Fake. Meltokio Sewers: Very near the end. You can't miss it. Latheon Gorge: When you enter the cave, there's a tresure chest very near the entrance.
2. Make sure Colette is in your party and has elemental weapon or gem.
3. Use Item Thief/Rover to stole an All-divide.
4. Make sure you don't kill the Fake. If you do, that Fake is gone and doesn't come back.
5. Escape from the battle.
6. Enter it again and repeat this.

This way you can get so many All-divides as you want or you can carry. You can steal an All-divide from Fake as many times as you want. Just make sure Colette has elemental weapon/gem equipped and Fake doesn't die.

After you've obtained the sacred stone key item in Mithos's castle, go to Sybak, and examine the weird red book with an exsphere in one of the bookshelves at the library, then go to Heimdall and talk to the man near the windmill, after that, go back to Sybak and check the red book again, you will then enter the cursed book of niflheim, the most difficult dungeon in the game.

Elixers is the godly medicine because it restores 100% HP and TP for a character. There is a way to obtain a max amount of these. Every time you beat Beginner, Intermediate, or Advanced class in the Meltokio Colloseum, you will get one Elixer. Repeat Beginners class to save time over and over until you have max Elixer.

When playing Red Light, Green Light in Tethe'alla, press Start when the Sea-Katz begin to turn around. You'll be asked if you want to quit. Select no, and when you go back to the game, Genis will be standing still regardless of whether or not he was in the middle of a move. This is a cheap, easy way to ensure that you never get caught by the Sea-Katz when he turns around.

Any fighter characters who have magic abilities can do this. I'll use Kratos as an example:
1. Set any of Kratos' tech to a magic skill. I recommend forward B
2. Make sure he can link magic after his last hit
3. In battle, find an enemy you won't do much damage on
4. Have Kratos do as many swings as he can, holding the forward button
5. Right after his 3rd or 6th hit, still holding forward, press B
6. IMMEDIATELY cancel the spell (X) and IMMEDIATELY press A again
7. Don't let go of forward. It helps a lot if you're holding forward and doing this

It'll take a few tries to get this. You have to be super fast in your fingers or it won't connect.

There is an easy way, however. Change your controls so that R is spell cancel/defend. In battle, before anything, hold the R button. Attack 3 or 6 times, cast the spell. The spell will immediately cancel, so start slashing again.

Once you have the Rheairds and can use them anytime,go to the Katz Village.If you talk to the Katz who asks you if you want to sleep say "Yes".He says it's only 50 Gald a night,but if you look at you Gald afterword,you didn't spend any money.This is really good if you want to be fully healed with no cost.

You can wield the Eternal Sword but still have another sword equipped on Lloyd.

Step-by-step
1.Have Lloyd cast Falcons Crest (secret tech) by pressing and holding block (default X), attack (default A), and then tech (default B).
2.While casting a enemy must kill you the easiest way to do this is die and have Sheena cast Purgatory Seal on you so you have no HP then use Falcon's Crest.
3.When you are revived after dying during Falcon's Crest you should be wielding the Eternal Sword.

Alright, I found a glitch in ToS, to make yourself completely invincible. To do it, follow the instructions below:
Go into a battle with low HP, and are able to use a unison attack IMMEDIATELY
Now, just as you get hit and loose your remaining HP, quickly unleash your unison attack. Your timing must be perfect.
Now, the character who unleashed the U. Attack will continue the attack with 0 HP, and when the unison attack ends, your character will continue to fight, with 0 HP. You will still take damage from monsters, they just cannot kill you. I dunno if they fixed this for the PS2 version, but thanks to it, I was able to destroy Shadow (The summon spirit) single handedly with Lloyd (To bad Kratos is gone at that time). Also, if you have a healer on your team, MAKE SURE IT DOES NOT HEAL!!! The healer will bring back your HP, and you'll have to do it all over again. Make sure you have characters alive who are not in your attack team, because after the battle, your fighting team will die. If your against a boss you think is invincible, think again!

This glitch works for Kratos, Zelos, and Lloyd

Have the character use Demon Fang from far away. Before the Demon Fang hits, link it to any of these moves:
Hurricane Thrust, Lightning Thrust, Lightning Blade, Super Lightning Blade

The moment Demon Fang hits the target, the lightning and/or hurricane will hit the target. Even if you have completely missed that tech.

You can easily get two of the most powerful weapon for Presea, the Gaia Cleaver. When you are able to get it (after level 80 or when Presea has learned all of her techs in the tree you chose) go to Ozette again and speak to the man next to Presea's dad's grave. He'll give you the Gaia Cleaver. Now, without living that screen, equip it on Presea from the new items menu (not always works from the equip menu) and talk to the man again. He'll give you another Gaia Cleaver

If you begin the Devil's Arm Quest, After a few Devil's Arm's, go to Altimira and sleep at the inn. Say yes that you want to go out at night. Head to the Casino Area. Go on the bridge and you will see a young man. He says he will sell you a kendama for 1,000 Gald. Say yes and then check your Gald. You actually spent 0 Gald!

To easily get the Gigolo title for Zelos, return to Meltokio after receiving the Spider Figurine, Chipped Dager, and Mirror Shard, but before picking up the Derris Emblem. Make Zelos your on screen character and go to his house, then talk to the butler to get the title. You would otherwise have to have Zelos hit on every female NPC in the game to get this title, but this way you don't have to flirt at all.

Equip Sheena with the Card of Lightning (found in the Meltokio Sewers or bought in Mizuho), the Thunder Cape (found in the Toize Valley Mine), and a Paralysis Charm (dropped by Iapyx or bought in Asgard). This will make her immune to lightning, which is the only type of damage Volt deals. The downside to this is that Sheena will also deal lightning damage, which heals Volt. Either use any color quartz item (except purple) or have Sheena use S. Seal: Water on herself to change her attack attribute to something else. Now you can just walk up to Volt and smack him around while he futilely attempts to zap you. These remedies are temporary and will wear off, though, so watch the numbers showing the damage you do. When they turn green, Volt is getting healed and you need to change your attack attribute again. To keep your other characters safe and out of harm's way, set their third strategy option to Hold Position.