Dynasty Warriors: Strikeforce Cheats (PSP)

Begin a battle, then immediately quit out.  Your buildings will gain points ( amount
depends on what cards you have set).  Although you need items for a level up, this will
prepare your building meter.

Get a character to level 10 to unlock his or her third costume.

This requires two human players, two PSPs and a wireless connection.
 

1. Player one should save the game, connect, and trade the item he or she wishes to
duplicate to another player.

2. Player one should now exit to the main menu without saving.

3. Player two should exit and save, thus duplicating the item (Player one did not lose the
item since there was no save after the transaction).

4.Have player two give the duped item back without saving and both players will have an
extra item.

Beat 50 missions with a character to unlock his or her fourth costume.

The following characters can be unlocked by performing the actions listed below:

Diao Chan - Beat "Battle of Hu Lao Gate" (5 Stars) 

Dong Zhuo - Beat "Battle of Luo Yang" and "Battle of Mei Castle" (5 Stars) 

Lu Bu - Beat Chapter 6

Yuan Shao - Beat Request Mission "Zenith Tower" (Chapter 6)

Zhang Jiao - Beat "Yellow Turban Rebellion" (5 Stars)

You can get EXP bonuses for your facilities by performing the actions listed below.

Ability Bonus - Get 3 Officer cards of the same rank (Lord, Off., or Strat.) / 
Give +3 bonus to all Officer cards / 4 of the same give +5 / 5 of the same give +10

Face Bonus - 3 Officer cards of the same character model / Give +3 bonus to all
Officer cards / 4 of the same give +5 / 5 of the same give +10

Force Bonus - 3 Officer cards of the same force (Wu, Wei, or Shu) / Give +3 bonus
to all facilities / 4 of the same give +5 / 5 of the same give +10

Perform the actions listed below to unlock treasures for the vault:

Art of War - Complete game as Wu

Awards of Valor - Collect lots of spoils in 1 battle

Banana Leaf Fan - Obtain an ultimate weapon

Book of Illusions - Completer chapter 6

Bronze Pheasant - Fully level up city

Dragon Ring - Complete many bonus objectives

Grand Histories - Complete chapter 3

He's Jade - Level a character to 50

Hex mark - Win many VS battles

Imperial Seal - Victory in many battles

Meng De's Manual - Complete game as wei

Mo Xie sword - Learn all 5 star Chi Skills

Red Hare - Defeat Lu Bu many times

Shadow Runner - Win several legends quests

Shan Hai Jing - Collect all officer cards

War God Statue - Defeated all Mosou officers

Way of Peace - Win a battle with every character once

4 Gods statue - Friend several people online

5 Colored stones - Collect all 5 star orbs

24 War Manuals - Complete game as Shu

You can augment facility growth rates with the card combos below:

Anti Dong Zhuo (Storehouse +30) - Cao Cao / Sun Jian / Liu Bei / Yuan Shao

Beauty / the Beast (Exchange +30) - Dong Zhuo / Diao Chan

Cao Cao personal bodyguards (Storehouse +30) - Dian Wei / Xu Zhu

Cao Couple (Exchange +30) - Cao Pi / Zhen Ji

Cao Family (Workshop +50) - Cao Cao / Cao Pi / Cao Ren

Chained Plots (Exchange +30) - Lu Buand Diao Chan

Father / Son (Academy +30) - Guan Yu / Guan Ping

Five Beauties (Storehouse +99) - Xiao Qiao / Yue Ying / Diao Chan / Zhen Ji / Sun
Shang Xiang

Five Tigers of Shu (Blacksmith +99) - Guan Yu / Zhao Yun / Zhang Fei / Huang Zhong
/ Ma Chao

Five Tigers of Wei (Blacksmith +99) - Zhang Liao / Xu Huang / Zhang He / Gan Jing /
Yue Jin

Husband / Wife (Exchange +30) - Zhuge Liang / Yue Ying

Master / bodyguard (Workshop +30) - SunQuan / Zhou Tai

Old Friends (Storehouse +30) - Cao Cao / Yuan Shao

Peach Garden Oath (Workshop +50) - Guan Yu / Liu Bei / Zhang Fei

Political Marriage (Blacksmith +30) - Liu Bei / Sun Shang Xiang

Sun Family (Workshop +50) - Sun Jian / Sun Quan / Sun Ce / Sun Shang Xiang

Three genius (Market +50) - Zhuge Liang / Sima Yi / Zhou Yu

Xiahou Brothers (Market +30) - Xiahou Dun / Xiahou Yuan

Yellow Turbans (Academy +50) - Zhang Liao / Zhang Bao / Zhang Jiao

Young Wife (Exchange +30) - Zhou Yu / Xiao Qiao