Lost Kingdoms 2

Import cards from Lost Kingdoms I to Lost Kingdoms II
First beat Thalnos in the Scared Battle Arena 2. Then travel to north and
beat Queen Katia in the battle ground where Gurd lives. When the world
map displayed after she defeated, select "OK", then confirm your answer
and select "Yes". You will be able to import your cards from Lost
Kingdoms I.

Unlock Kendarie Warrior In Vs. Mode
Beat the Kendarie Card Master Boss in the Kendarie Fortress in the first
region. Save your game. Re-load your saved game file. Kendarie Warrior
will be available for selecting in VS mode.

Unlock Rashiannu in Vs. Mode
Complete the final stage for single player mode. Then let the game save
the completion settings. Re-load your saved game file. Rashiannu will be
available for selecting in VS mode.

Unlock Thalnos from Lost Kingdoms in Vs
Defeat Helena and Leod in the Scared Battle Arena 2, go to the northern
most door in the area and enter to in. Defeat Thalnos and save your game.
Re-load your saved game file. Thalnos will be available for selecting
in VS mode.

Unlock Urbur Cultist in vs. mode
Beat one of the cultists that you encounter in battle (you can meet cultist
in Ruldo Forest), then finish or abort the stage you're on. Save your game,
then re-load your saved game file. Cultist will be available for selecting
in VS mode. His character marked as Unknown.

Card Duplication:
You need two memory card to perform this trick. Insert your memory card 1
in to slot 1 and memory card 2 in to slot 2. Obtain the cards what you want,
then save your game on both memory card. Begin a new game in multiplayer mode
with saved game files from both of memory cards. Bet the desired cards from
memory card slot 2, and allow to the player to use memory card 1 and allow
to win quickly. When you have obtained all the wanted cards from memory
card slot 2, save the game from memory card slot 1 again into both
memory card slot 1 and 2 and repeat the process.