Arc the Lad: Twilight of the Spirits

Unlock Choco
Beat the 30 round arena trial in Rueloon using Darc's Party

Unlock Diekbeck
Beat the 20 round arena trial in Cathena using Karg's Party

Begin Game with Karg
After finishing the game one time you will have a new option called "New Game+" that lets you start with Karg with King Statuette, 3 Diamond coatings, 999 Spirit Stones, 10 Bountiful Fruit, 50 Dilzweld Bombs, and 100,000 Gold.

Get more skill/magic:
When certain characters "class up" at the end of the battle screen, this indicates you can learn new skill or magic. Go to the menu, select the character that "classed up" and select "Skill". The magic/skill menu will appear, displaying both the learned magic/skill and skill/magic's that have not been learned. Choose the one you want to learn and pay the "SP cost" to get it.
Note: You get SP by attacking and , killing enemies.

New Game+:
Successfully complete the game to unlock the New Game+ option. This allows you to start as Kharg with a King Statuette, 999 Spirit Stones, 3 Diamond Coatings, and 100,000 G; or Darc with a Romantic Stone, 999 Spirit Stones, 3 Diamond Coatings, 10 Bountiful Fruit, 50 Dilzweld Bombs, and 100,000 G.

Seed Of The Life Tree: Special Item
In Darc's Story 2, in the Battle at the Vas Defferens, if you use the Special Attack Steal on the boss, you will receive the special item, seed of the life tree. It will increase your life bar a little.

Spirit Amulet Special Item
In Kharg's story: Rivalry, once you have obtained the Lamda sutra, and have had it read, return to the library and open the special door again. A Diekbeck imposter will be on the stand where the Lamda sutra was. Talk to him and say he is lying when he says he leader of the Ultra-Mech Squad. Then he will ask ten questions, the following answers are correct.

1. Counterclockwise.
2. A cat.
3. Beautiful stones.
4. Palkia.
5. The entrants' lunches.
6. Dice.
7. The shinobi gang.
8. Lakelta.
9. A pipe.
10. Buster.

You will be awarded a Spirit Amulet which blocks all elemental attacks except for dark attacks.

Japanese dialogue
Hold R1 + R2 + R3 buttons when selecting the language option at the options screen. A new option for Japanese will appear.

When fighting enemies such as the Delzweld soldiers, defeat the commanders first. They often carry equipment you can use or sell.

When you fight Cameillia, and afterwards Droguza, find the blue and green boxes on the battle field and break them open before ending the battle. The contents are well worth the effort.
When inside the Flying Castle, do not go directly to the elevators to fight the Divine Ruler. Instead, search each floor for the treasure rooms. There is powerful equipment for every character spread throughout the fortress

Burst Blade:
When fighting against Darkham and his bodyguards, defeat Darkham first for Kharg's Burst Blade, which nearly doubles his attack arc width.

Dragon's Wrath and Storm Medallion:
When you fight the two giant dragons in Darc's story, kill the Golden Dragon for a Dragon's Wrath, which puts Darc's counterattack to 100, or the Silver Dragon for a Storm Medallion. If you want both items, take the extra time to steal from one dragon after killing the first.

Golem Mask and Stuffed Bear:
When you fight Bebedora and her two Altimas, it is a good idea to either kill the Altimas or steal from them to make sure you get Bebedora's Stuffed Bear and Maru's Golem Mask.

Use the following trick to get ten free Herbs. In Chapter 1 of Darc's story, after you get Densimo into your party go to the entrance of Gorma's House. Look to the left, and you will see a yellow skinny Orcon walking around. Talk to him and he will note that Densimo is in your party, causing him to start talking about the five Wonders of Orcoth. Pretend that you care about what he says and say that you will listen. He will ask you a few f times if you are still interested in listening. Lie and say "Yes". Eventually he will ask you how many words were in the spiel he just gave. Choose the one that reads 600-800 (the fourth choice) and he will give you ten Herbs. Note: You must do this while Densimo is in your party. Doing it before or after results in you obtaining nothing.

Knuckle Guard:
When playing as Kharg in the beginning of the game, after going through the entire Banjo, Lloyd, Spirit Stone scenes, go to the bottom-left of Yewbell to the refinery. Talk to the man outside and he will say he is waiting for Banjo so he can unlock the shop. He asks you to go find Banjo. Say "Yes", then go to the item shop. He will be in the upper-right corner. Talk to him, and he will give you the Knuckle Guard. It increases only Kharg's Defense and Guard,and it is a good weapon part at the beginning of the game. When you no longer want it, sell it for 350 G.

Better aiming:
To aim better without moving from your current position, when controlling your character, hold R1 during a battle. An arc will appear. The highlighted arc shows the range where you can attack. Aim at the enemy and attack.

Aiming at multiple enemies:
When enemies are close, you can actually attack them depending on your character's attacking arc. Some are large while others are small but ranged. Go to the position that you would like to attack from. Hold R1 and aim the arc at the enemies. Move the arc left or right to aim properly until you get "targets" above the enemies you want to attack. Sometimes you must quit aiming and move slightly to aim properly. Some require very slight adjustments; turn very slowly.

Joint attack:
You can do a joint attack on enemies whenever your character's body is burning with fire. You get this burning effect when you receive a certain amount of damage. When using that character to attack, a nearby ally will team up with you.

Dealing more damage:
Attacking the enemies from behind deals more damage than from up front. Use that angle of attack whenever possible.

Defeating Black Abyss:
It is possible to defeat Black Abyss at level 33 for both Darc and Kharg. A long range character (Maru recommended) is required. Before you start the battle, equip all your character's weapons with at least two Diamond Coating or something else that increases your attack greatly Equip most of your characters with at least two Diamond Coatings is recommended. You will also need at least two Stone Bags for each character, and extra Gales that make you speed up in the party items for backup. Allow your character to learn a long and wide range moves. Make sure to sell all your Elixir and other items that effect enemies items, and buy lot of Strongest Herd and a dozen Revival Medicines. Give the six characters at least three Greatest and make sure to have one healer. Store that character with more Strongest Herd and three Revival Medicines. However, do not throw items that temporary raise ATT away, as they will be needed. When you are ready to battle, select Maru with you and Demelia, or a party with Darc, Kharg, Paulette, Ganz, Volk and Maru. Black Abyss has three moves: summon Brain Cell to attack, absorb HP from nearby, and a beam that deals lot of damage across the room (but not the edge of the room). This attack will regain his black mist and raise its defense. Black Abyss has great defense. You must kill Brain Cell to weaken it. If you notice the black mist around him slowly lighten, use the following strategy. If you have master Black Abyss moves, then you are ready. Separate your six characters, three to each side, and stay at the edge of the room. Kill each Brain Cell. Do not use too many moves on them, but on Black Abyss. Note: If you are out of SP for moves, re-equip that character's accessories to Gale to raise that character's speed (especially when Maru is out of SP). Raise Maru's ATT with items. Once you notice the mist surrounding Black Abyss has disappeared, do not go near Black Abyss. You will find that the Black Abyss has become inactive. Use this opportunity to slowly kill Black Abyss with your best long range attack (Maru).

Defeating Demon Droguza:
Before going to the Megis with Darc's party in the "Evolution" chapter, make sure that Camellia is at least at level 20 and has all the best weapon attachments and armor (and perhaps speed boosting). Before you go into the elevator in the lab, make sure that you have transformed Camellia into her younger self and have enough Spirit Stones to max her out. When you fight Demon Droguza, get past the point where he casts a wall attack spell, but far enough that he cannot swipe at Camellia (the rest of the party is support). Just keep shooting and he will almost never hit Camellia, except for his tail bomb attack (in which case you should heal).

Easy experience:
When in a battle and there are stumps, crates, etc., attack and destroy them. Sometimes you will get items and Spirit Stones. It is worth the extra effort because even if it is empty, you get experience and SP for them.

When you are in the Flying Castle and are fighting Lilia Getmann, there will be a few Meshimgen. If you kill one, on Lilia Getmann's next turn it will summon another Meshimgen. With this strategy you can get incredible experience and SP. The Meshimgen also will usually drop 60 Spirit Stones, so you can use as many skills as desired. With this strategy, you can level up, get more Spirit Stones, and have enough SP to get everyone's star number to the maximum; allowing you to get ready for the powerful final Boss, Lord Of The Black Abyss.

An very easy way to get extra experience is to fight in the Arenas (Cathena and Lamda in Kharg's story, or Orcoth and Rueloon in Darc's story). Although expensive (100 G for five to ten fights, 200 G for fifteen to twenty fights, and 300 G for thirty fights), you can sometimes get 5,000 experience per fight and upwards of 100 SP. A good strategy for getting though them is to make sure you have enough Spirit Stones or items to keep yourself healed. Also, remember that the final round is more often than not the most difficult of the entire competition.

After unlocking the New Game+, in Darc's second chapter, go to the Orcoth Arena and equip who you want to level up with the Romantic Stone. Then, enter the second tournament and use only skills. Because of the Romantic Stone, it will not use up Spirit Stones. You can go all the way up to level 40 in a matter hours with this strategy.

Chest behind dog in Milmarma:
You will need to have a bone to give to the dog, Rover. It can be obtained by checking the two rocks behind the old man in the small land platform leading to the palace. You will not get any item. It is just charity work to help little Rover get a new owner