Anilrgowda

Unlock Lillia Card:
When The game starts you can upload Arc The Lad Twighlight of spirits clear data, when you do this it gives you the Lillia card which can later be processed into the character Lillia.

Get Each Character Card:
Note that these characters must be materialized and can only be used in counter guild missions and online. Also note that any character card missed in a notice board mission can be found in the lottery shop after all the other cards have been won from the lottery. You win each card in order.

Unlock Alec:
Win his card in the Dilzweld lottery. (7th)

Unlock Arc:
Obtain the Arc hunter rank after completing the game.

Unlock Bebedora:
Veteran Notice Board task "Wanted: Exorcist!" Found in a room with a ton of Ghouls and a malademon Reecher. Defeat the Reecher to get the card.

Unlock Camellia:
Win her card in the Dilzweld lottery. (1st)

Unlock Cheryl:
Master Notice Board task "Wanted: Master Hunter!" Located in the Ice Gallery within an ice stalagmite surrounded by Poison Slimes. Hard to miss.

Unlock Choco:
Complete the Monster Book by defeating at least one of every single monster in the game. The Monster Book is with the Mofly in Rueloon.

Unlock Darc:
Expert Notice Board task "Urgent Manhunt!" Found in the Dragon's Lair. Defeat three Green Dragons that are found near the boss room. Hard to miss.

Unlock Delma:
Win her card in the Dilzweld lottery. (2nd)

Unlock Diekbeck:
Win his card in the Dilzweld lottery. (8th)

Unlock Elc:
Received from the Mofly in Milmarna. You can't miss it.

Unlock Ganz:
Veteran Notice Board task "A Favor to Ask." Inside the terrorist base, you will find a group of exploding barrels. The card is in the middle barrel.

Unlock Iga:
Win his card in the Dilzweld lottery. (4th)

Unlock Kharg:
Found in the final dungeon of the story missions, Cathena Lab. Near the end of the dungeon, the card is within a Tin Golem. Hard to miss.

Unlock Kukuru:
Rookie Notice Board task "Find the Missing Person." Found in a crate 3 screens down from the summit. (Appears on your way down)

Unlock Leeza:
Expert Notice Board task "Help my Father!" In a crate in the basement of the castle.

Unlock Lillia:
Load a cleared Arc the Lad: Twilight of the Spirts save or win her card in the Dilzweld lottery. (9th)

Unlock Lutz:
Win his card in the Dilzweld lottery. (3rd)

Unlock Maru:
Rookie Notice Board task "Find my Husband Demill." Found in a crate in the center of a plus shaped room. Hard to miss. (Appears on the way out)

Unlock Paulette:
Master Notice Board task "To Anyone Who'll Believe Me..." Located in an iron box inside the Romarian Tunnel. The box is surrounded by Dark Dwellers.

Unlock Shu:
Win his card in the Dilzweld lottery. (5th)

Unlock Tatjana:
Received after the Apprentice Notice Board task "Find Our Teacher!" You get this automatically.

Unlock Theo:
Apprentice Notice Board task "Find Our Teacher!" In room with boxes floating in midair. Use them to make your way across an invisible bridge.

Unlock Tosh:
Win his card in the Dilzweld lottery. (6th)

Unlock Volk:
After completing the game go to Orcoth and fight him in the arena. After winning you get his card