Lamentation Sword

Press the [Enter] key during play, and an input field appears.
Then input the following cheat codes:

Icompletedthisghostgame: Carries you into the unreal world.
IfIwantIgotit 32 : Gives you items.
The number at the end is the number of the item you want.
Seethesilverlining : Remove the darkness
Showmetheworld : The whole card releases, and displays also the positions of the opponents, who disappear to darkness.
Thefierceunknownpower 99 : Increases Magic to 99
Thegreathealthpower 99 : Increases Health to 99
Thehealthyspiritpower 99 : Increases Brain to 99
Theoriginaldexteritypower 99 : Increases Dexterity to 99
Therealmusclepower 99 : Increases Strength to 99
ThesoulHunter'sholyPower 10 : Increases power to 99
Youcansaymoneyiseverything 10000 : Gives you bucks.
Yougainasoneplease 30 : Gives weapons.
The number at the end is the number of the weapon that you want.

The cheats are case sensitive, and must be entered exactly as shown.
(Information from Cheat Machine)