Dynasty Warriors 4

During a duel, stand against the border fence, and aim your arrow towards the outside of the duel area.
You will never get attacked in this condition.
Useful when you are about to lose a duel.

Instead of completing 11 stages to unlock Zhang He, on 'Battle of Guan Du - Wei Forces', burn down the supply depot Wu Chao. If Zhang He isn't defeated yet, he will defect and surrender to your side. At the end of the stage, he will be unlocked.

From the top right entrance of the castle, go toward map bottom left, there will be a walled area containing two houses. Take a careful look at the top right entrance of that walled area, you can enter the walls from there.

Side - Nan Man Side.
Character - Yue Ying.
Must be equipped with a horse saddle.
Immediately after you click on Stage Start, press and hold L1 and Down on the directional button. Don't press any other buttons, and just keep the L1 and Down pressed even after the battle starts, and Yue Ying will walk up the mountain. From atop the mountain, you can enter water and get on top of castle walls.

Bug 1
Side - Yuan Shao Side.
Character - 1P Xu Huang, 2P Zhao Yun.
After the game starts, both characters will be Zhao Yun.

Bug 2
Side - Cao Cao Side.
Character - 1P Xiahou Dun, 2P Zhao Yun.
After the game starts, both characters will be Zhao Yun.

Character - a high jumper such as Zhang He.
Equip - Fly Boots.
At the top left area of the map is the fort with all the explosions. At the top right within that fort is a broken building with a different color as all the other broken buildings, this one is light brown. Try to jump up the broken walls of the broken building and you will land in mid-air.

In the Encyclopedia "officers" section both Ling Tong and Ling Cao have the exact same birthdate and death information, which is impossible because Ling Tong is Ling Cao's son.

In order to get OPENING as a selection under OPTION, you must get all 42 character, and complete with at least one character under each force(Wei, Wu, Shu, Dong Zhuo, Lu Bu, Yuan Shao)(by competing one character in each force you'll also unlock Yellow Turbans Force as a Selection in Musou Mode) for more information on unlocking character checkout Muni Shinobu's Character Unlock Guide