After you have won the Weekend, Limited, and KC Tournaments, you need to go to the Shadow World (The area marked "???") and sign up for the Survival Tournament. It costs 8000 DP to enter and you battle random opponents. You carry over your remaining Life Points each time you go to another Duelist in the Tournament. Your remaining LP plus the prize money are awarded to you when you defeat all of your opponents. You also get a shiny new trophy!
I have yet yo try this but...I will. As soon as I buy Marik's Deck "Dark Ceremony". Trying to assemble a deck made for discarding an opponent's cards in hand....I just seem to take a liking to his cards.^^
ALSO.....
-Questions if Kaiba Trophy-
Puzzles of Kaiba
On a Friday,go to the KC Tower with a KC Cup Throphy and talk to Kaiba and he'll give you a set of challenges.
Puzzle #1: 1st Friday
Steps:
1. Activate Karate Man's special ability which increases his attack
to 2000.
2. Use Giant Trunade to send all of his cards back to his hand.
~~~Now, this will power up Muka Muka a lot - but don't even worry,
now Flash has 0/0!
3. Don't even summon Gemini Elf, with Karate Man at 2000 ATK,
attack Flash, taking out the rest of Kaiba's life points.
Puzzle #2: 2nd Friday
Steps:
1. Flip Pengiun Soldier, and send Celtic and Gemini back to Kaiba's
hand.
~~~Doing this will destroy all his Spell cards, which includes the
Black Pendents doing 1500 to your LP. You want this to happen.
2. Sacrifice Penguin Soldier for Summoned Skull.
3. Equip him with Megamorph, increasing his attack to 5000.
4. Destroy Kaiba's Life points, you win.
Puzzle #3: 3rd Friday
Steps:
1. Activate Guardian Sphinx's ability to flip him face down again.
2. Flip Summon him again, sending all of the Monsters back to his Hand.
3. Flip Des Koala, doing 4000 to his Life Points. Because of
Dark Room of Nightmare, it drops him 300 more.
4. Now activate Secret Barrel, which does 2200 damage more, then
Dark Room's extra 300.
~~~If you did this right, Kaiba's Life Points should be 2800.
5. Now attack Kaiba's Life Points with Guardian Sphinx and Des Koala,
and you win the duel.
Puzzle #4: 4th Friday
Steps:
1. Use Tribute to the Doomed, discard Dark Magician of Chaos, and
destroy the BEWD.
2. Use Monster Reborn to bring back Dark Magician of Chaos. Doign so
activates his effect.
3. Take the Monster Reborn back, and use it to revive Blue-Eyes White Dragon.
4. Switch Judge Man to Attack mode, and knock out all of his Life Points.
Puzzle #5:5th Friday
Steps:
1. Activate Tribute to the Doomed, discarding your Vorse Raider. Destroy
your Dark Witch.
2. Summon Chaos Emperor Dragon - Envoy of the End.
3. Activate his Special Ability, taking away his 2400 LP. You win.
Puzzle #6:6th Friday
1.1. Summon Magical Scientist.
2. Use his effect to summon two Crimson Sunbirds and a
Thousand-Eyes Restrict.
3. Use Thousand-Eyes Restrict to absorb Cosmo Queen.
4. Activate Catapult Turtle's Effect, sacrifice Thousand-Eyes Restrict.
5. Activate Giant Trunade, sending Spellbinding Circle back to his hand.
6. Switch Catapult Turtle into ATK mode.
7. Activate Mountain
8. Destroy both Curse of Dragons with both Crimson Sunbirds.
9. Attack his Life points with Catapult Turtle and Magical Scientist.
~~~His LP should now be at 3150, with yours at 1000.
10. Activate Catapult Turtle, sacrificing all your monsters,
with Turtle last.
Puzzle #7: Last Friday
1. Summon CED: Envoy of the End by removing Vorse Raider and
Dumames Dark Witch From Play.
2. Use Primal Seed, and take back the two monsters.
3. Use Tribute to the Doomed, Discarding BLS and destroy a BEWD.
4. Use the second Primal Seed to get back the first one and BLS.
5. Use Primal Seed #1 to get back the other Primal Seed and Tribute to
the Doomed.
6. Repeat steps 3 through 5 to destroy the remaining BEWDs.
~~~From here, your hand should have Vorse Raider, Primal Seed, Tribute to
the Doomed, Dunames Dark Witch, and Black Luster Soldier
7. Move Banisher of the Light into attack mode.
8. Summon Vorse Raider.
9. Attack his life points with all your monsters, bringing him to 2100 LP.
10. Activate Chaos Emperor Dragon's effect. 3 on Field+4 in hand=7.
7*300 = 2100. You win. Congradulations, you now have a shiny "Qs if K" trophy
**Credit goes to ALEX011893
-Exodia Duel-
Grandpa's Special Duel
On a Monday,go to the Card Shop with a Exodia Deck and he'll duel you in a Special Match Duel with 10 LP each.If any player loses the LP,the game is a draw.You need to assemble the Exodia pieces first.When you win,he'll give you 700 DP and a chance to enter his tourney.
**Credit goes to ALEX011893
[REFER TO THE CHEATS/FAQ's SECTION FOR MORE DETAILS AND HINTS]