cheat Warriors orochi 2 ps2

M (CBv6+/GSv3+/XPv4+ or higher)
9013BE90 0C04EF4C

M (CBv1-5/XPv1-2 only)
F0100008 001A027B

M (AR2v2/GS2v2/SMv3.8 coder only)
0E3C7DF2 1456E7A5
F0100008 001A027B

Unlock All Dream Mode and Free Mode Scenarios and have them cleared on all difficulties
405311c0 00440003
00000f01 00000000

Unlock All Characters (FIXED)
4052c328 005e0036
00006000 00000000
It will mess with character ability acquisition. Fixed as of January 22, 2009. Now everyone is unlocked for all game modes including 2 player vs.

All Characters' Level 99
4052c254 005c0036
000000ff 00000000
Save once you have it, you won't be able
to change costumes or weapons or maybe 1
other unknown thing while it is on.

All Characters' Life and Musou Max
4052c258 005c0036
10001000 00000000

All Characters' Attack and Defense Max
4052c25c 005c0036
10001000 00000000

All Characters' Speed and Proficiency Max
4052c260 005c0036
c0001000 00000000

All Characters' Weapon 1 is 4th Weapon with All Attributes
4052c268 005c0036
7fff0003 00000004

All Characters' Weapon 1 has All Skills, 15 Slots, and +20 Extra Attack
4052c26c 005c0036
140f7fff 00000000
That might freeze the game. I checked my weapon with all skills and the game froze, but I didn't actually try to play the game with it on. If the game freezes, you'll need to change the 7fff part. These are skills digits.
0001 Guile
0002 Iron Will
0004 Acrobatics
0008 Nutrition
0010 Firepower
0020 Verity
0040 Teamwork
0080 Evasion
0100 Stability
0200 Highflier
0400 Resolve
0800 Synergy
1000 Supremacy
2000 Revival
4000 Almighty

All Characters' Weapon Attributes Maxed Out
4052c270 005c0036
ffffffff 00000000
4052c274 005c0036
ffffffff 00000000
4052c278 005c0036
ffffffff 00000000
4052c27c 005c0036
ffffffff 00000000

All the codes above this line only work with codebreaker version 7 or higher.

Unlock All Movies
10531532 ffffffff
10531534 0fffffff

Have All Stories Cleared
005311a4 00000008 (Shu)
005311a8 00000008 (Wei)
005311ac 00000008 (Wu)
005311b0 00000008 (Samurai)
005311b4 00000008 (Orochi)

Character 1 Modifier
0053184c 000000??

Character 2 Modifier
00531874 000000??

Character 3 Modifier
0053189c 000000??

Max All Skills
00531521 00000019
10531522 00001919
20531524 19191919
20531528 19191919
2053152c 19191919

Have All Treasures
20531504 ffffffff

Stop Time While Playing
0053183b 00000002

Activate all 4 power-ups
205318d4 ffffffff
It might be useless without the infinite time codes for those items.

Attack Range Modifier
10541962 0000???? (I tried ffff just to see what a negative value does, and I randomly hit every enemy within visible distance.)

Horse Speed Modifier
10541966 0000????

Can Always use True Musou
10541970 0000ffff

For the attack range or horse speed modifier, I'm not sure if it's floats or normal hex values. Try what you want, 1000 should be good though.