Soul Calibur cheats and cheat codes for Dreamcast

Unlock Water Vein Mission
Finish the game with Lizardman

Transparent characters
Firrst unlock Edge Master after go to the character selection menu, 
hold R while choosing a character.

Unlock extra characters and stages
Finish the game with each of the default characters

Unlock Edge Master as playable character:
Finish the game with all normal and bonus characters.

Unlock Hidden art in the museum and a 3rd costumes
Finish all the missions

Unlock museum options and "Extra Survival" mode:
Finish all mission battles

Metallic characters
Fight in mission battle mode until the "Metal Mode"
option is unlocked.

Extra weapons
Unlock Edge Master and finish all mission battles. Go to the 
character selection menu, hold L while selecting a character 
for bonus weapons.

Select victory stance
Win a match, after press X, Y, or B during the replay.

Art card secrets
Cards - Secrets:
002: Card gallery
003: Silk road rains stage
005: Harbour of souls stage
006: Card gallery
010: Maze of the dead stage
014: Card gallery
015: Character profiles open
018: Card gallery
019: Colosseum stage
021: Silk road ruins stage
026: Shrine of eurydice stage
027: Palaaea shrine stage
031: Kunpaetku shrine stage
032: Takamatsu castle stage
036: The adrian & fortress stage
037: Money pit stage
039: Xiangua's SP costume
040: Takamatsu castle stage
045: New art card stage
054: Exibition theatre open
055: Card gallery
056: Hoko temple stage
058: Sophitia's 3P costume
060: The adrian & fortress #2 stage
065: City of water stage
068: Proving grounds (Twilight) stage
070: Maxi's 3P costume
079: Maze of the dead stage
081: Ostrheinsburg castle stage
082: Valentine mansion stage
083: Takamastsu (Winter)stage
084: Water labyrinth stage
090: Card gallery
093: Harbor of souls #2 stage
094: Voldo's 3P costume
101: Silk road ruins #2 stage
103: Card gallery
104: Kunpaetku shrine stage
106: Maze of the dead #2 stage
116: Shrine of eurydice #2 stage
117: Palagaea shrine #2 stage
122: Kunpaetku shrine #2 stage
123: Silk road ruins (Night) stage
126: Card gallery
130: Chaos stage
132: Takamatsu castle #2 stage
134: Money pit #2 stage
137: Taki (exhibition theatre)
143: Hoko temple #2 stage
148: Colosseum #2 stage
149: Card gallery
155: Voldo (exhibition theatre)
159: Card gallery
167: Extra survival mode unlocked
169: Hoko temple #2 stage
177: Sophitia (exhibition theatre)
178: Valentine mansion #2 stage
179: Opening direction unlocked
180: The adrian & fortress #2 stage
182: City of water #2 stage
183: Nightmare (exhibition theatre)
188: Water vein #2 stage
189: Astaroth (exhibition theatre)
198: Hwang (exhibition theatre)
199: Proving grounds #2 stage
203: Card gallery
207: Yoshimitsu (exhibition theatre)
215: Ostrheinsburg castle #2 stage
217: Card gallery
224: Weapon select feature unlocked
225: Lizard man (exhibition theatre)
230: Siegfried (exhibition theatre)
233: Rock (exhibition theatre)
239: Seung mina (exhibition theatre)
251: Cervantes (exhibition theatre)
256: Edge master (exhibition theatre)
265: Metal model mode unlocked