CheatCodes.com has all the official Warriors: Orochi PS2 cheats to unlock everything. If you know of any that we don't have, please let us know.
All published and official codes as of Wednesday May 22, 2013 for Warriors: Orochi are shown below. We also have this game on PlayStation 2, PSP, Xbox 360, and sometimes tricks from other game systems will also work on PlayStation 2.
Unfortunately the only unique horses you can get are Red Hare and Matsukaze. You get one or the other, randomly, at the start of each stage when you have Level 10 Cavalier equipped. The generic horses you start with get better as your Cavalier level increases. Here's the generals that unlock Cavalier upgrades.
1. Zhang Liao 2. Mituhide Akechi 3. Yoshihiro Shimazu 4. Ieyasu Tokugawa 5. Ma Chao 6. Yoshimoto Imagawa 7. Guan Yu 8. Liu Bei 9. Keiji Maeda 10. Lu Bu
In Wei Story - Stage X4, prevent all engineer units from entering the village
Impress him in Stage X7 in all four stories (see next hint)
In Wei Story - Stage X3, defeat the two Nene clones within 4 minutes after their appearances (free Goemon to start this event)
In Wu Story - Stage X2, defeat him after all three supply captains reach your main camp
In Shu Story - Stage X6, open the dam and keep all the swordsmen (yellow forces) alive
In Wu Story - Stage X4, successfully allow all civilian groups to escape
In Shu Story - Stage X4, break all of Goemon's treasure boxes
In Wu Story - Stage X3, kill all the messengers who attempt to retreat
In Wu Story - Stage X6, make sure all ally reinforcements reach Keiji's base before the timer shows 10 minutes remaining
In Shu Story - Stage X5, aid Saika's ambush, then defeat the enemy commander
Clear Wei Story - Stage X5 with Diao Chan's unit intact
Impress Lu Bu by defeating him in Stage X8 in all four Stories (see next hint)
In Samurai Warriors Story Stage X4, prevent all money supply troops from reaching Dong Zhuo
In Samurai Warriors Story - Stage X3, escort Lu Xun to his destination.
In Wu Story - Stage X5, meet Da Qiao before the enemy does.
On hard mode do a stage that has a level 3 star or above. Complete the stage and 1 of your characters will get the 4th weapon.
Samurai Warriors Story - Stage x2, all peasants must escape and Ma Chao must stay alive.
Shu Story - Stage x2, make sure your ambush party plan succeed.
Samurai Story - Stage x6, kill the 2 retreating orochi generals before they get to their ambush area.
Wei Story - Stage x2, rescue him and keep main camp save.
Shu Story - Stage x3, save all the yellow force generals.
Wei Story - Stage x6, defeat all 6 sorcerers and the fake Cao Pi by yourself quick.
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