Cao Cao Battle of Xia Pi, Wei Side: Defeat Gao Shun before you get the message that he's guarding the dam then defeat Zhang Liao.
Cao Pi Wu Zhang Plains, Wei Forces; Kill any three officers, Zhuge Liang dies, Destroy all arbalests when they appear
Cao Ren Escape from Chi Bi, Wei Forces. Kill all the enemy reinforements and defeat Sun Quan last.

Da Qiao Xia Kou, Wu forces: Defeat Cai Mao and Gan Ning before Ling Tong is defeat
Dian Wei Wan Castle, Cao Cao side: Meet with Cao Cao, Take him to escape gates, Don't let no one get past you until u get the message that Cao cao escaped
Diao Chan Battle of Xia Pi, Lu Bu's Forces. Defeat all generals and subgenerals before Cao Cao arrives and do not let any of your own generals from dying.
Dong Zhuo Liang Province, Dong Zhuo's Forces; Take all 5 bases and defeat Ma Chao and Pang De

Gan Ning Battle of Xia Kou, Huang Zu's Forces. Defeat Ling Cao and Ling Tong within 2 minutes of the stage.
Guan Ping Escape from Chi Bi, Shu's Forces. Defeat all enemy generals and sub generals.
Guan Yu Battle of Fan Castle, Shu Forces. Defeat Niu Jin and Yue Jin before the water attack is triggered.

Huang Gai Yellow Turban Rebellion, Han Forces; Kill all subgenerals and officers outside of Zhang Jiao's fort
Huang Zhong Battle of Mt. Ding Jun, Shu Forces. Defeat Xiahou Yuan and Zhang He within 5 minutes before Cao Cao appears.

Jiang Wei Tian Shui, Wei Forces; Do nothing until your commander starts to run away, then defeat Gao Xiong in northeast

Ling Tong Hei Fei, Wu forces: Defeat Zhang Liao each time he appears
Liu Bei Battle of Yi Ling, Shu Forces. Defeat Ling Tong, Gan Ning, Lu Xun, and Sun Shang Xiang.
Lu Bu Battle of Chang Shan kill 1000 enemy troops
Lu Meng Fan Castle, Wu Forces; Make sure Xu Huang appears, Mi Fang and Fu Shi Ren defect (must keep alive), defeat Zhang Bao and Zhang Fei
Lu Xun Battle of Bai Di Castle; Defeat Ma Chao and Jiang Wei before entering the castle.

Ma Chao Tong Gate, Allied Forces; Knock Cao Cao off his horse before he crosses the first river
Meng Huo Conquest of Nan Zhong-Nanman Side- Defeat Huang Zhong, Wei Yan, and Yue Ying without losing any allied officers

Pang De Battle of Mt. Ding Jun, Wu Forces. Defeat Zhao Yun, Guan Ping, Wei Yan, and Huang Zhong before Cao Cao arrives.
Pang Tong The Invasion of Nan Zhong, Shu Forces. Follow Zhuge Liang's orders. After that, defeat Wu Tugu before the tactics squad is defeated.

Sima Yi Battle of Chen Cang, Wei Forces. Capture all enemy bases producing siege weapons before they do any damage to the castle.
Sun Ce The Trials of Sun Ce, Sun Ce's Forces. Defeat all phantom Yu Ji's and defeat Sun Jian and Da Qiao in less than 10 minutes.
Sun Jian Si Shui Gate, Allied Forces; Defeat Lu Bu within 5 minutes of appearance
Sun Quan Battle of Chi Bi, Allied Forces. Successfully make all 3 parts of the fire attack succeed.
Sun Shang Xiang Invasion of Nan Zhong, Wu Forces. Rescue Sun Quan after the ambush event and defeat all officers except for Meng Huo.

Taishi Ci Wu Territory, Allied Forces; Sun Quan gets ambushed, Defeat Sun Quan before rendezvous with Zhou Tai, then defeat Zhou Tai

Wei Yan Battle of Chen Cang, Shu Forces. Defeat all 4 Defense Captains.

Xiahou Dun Fan Castle, Wei Forces; Stop water attack by defeating Guan Ping
Xiahou Yuan Battle of Chi Bi, Wei Forces. Prevent all parts of the fire attack.
Xiao Qiao Jing Province, Sun Jian's Forces; Defeat Cai Mao and Lu Gong before Sun Jian gets ambushed
Xing Cai Battle Of Bai Dai, Shu Forces; Get Xing Cai health in orange to get Liu Chan message. Go to Liu Chan and rescue peasant militia.
Xu Huang Chang Ban, Cao Cao's Forces; Defeat Guan Yu and Zhang Fei after Liu Qi shows up
Xu Zhu Tong Gate, Cao Cao's Forces; Defeat Ma Chao and Pang De before Han Sui has a chance to defect

Yuan Shao Guan Du, Yuan Shao's Forces; Keep Yan Liang and Wen Chou alive (kill Guan Yu ASAP), demoralize Cao Cao's troops into opening the side gates
Yue Ying Wu Zhang Plains, Shu Forces; Defeat Deng Ai before he sets up the catapults

Zhang Fei Chang Ban, Liu Bei's Forces; Defeat Wen Pin, Xiahou Dun and Xiahou En without anyone crossing the bridge
Zhang He Battle of Jie Ting, Wei Forces. Surround Ma Su. Then, Defeat Gao Xiong and Wang Ping and take their gates. Capture Supply Base and kill off Ma Su.
Zhang Jiao Yellow Turban Rebellion, Yellow Turban Forces; Kill Gongsun Yue and let the falling stone event happen. Go to Zhang Liang and Zhang Bao's alters.
Zhang Liao Hei Fei, Wei forces: Freely kill many generals and sub-generals till 3 messages apprear with Wu soldiers admiring Zhang Liao
Zhao Yun Battle of Cheng Du, Shu Forces. Completely take over the South Fort.
Zhen Ji Battle of He Fei Castle, Wei Forces. Kill at least 300 troops and go by Cao Pi to get a scene of her killing enemy troops.
Zhou Tai Battle of Yi Ling, Wu Forces. Defeat Zhao Yun before the fire attack and successfully complete the fire attack.
Zhou Yu The Battle of the Wu Territory, Sun Ce's Forces. Kill Yan Baihu and Wang Lang
Zhu Rong The Invasion of Nan Zhong, Nanman Forces. Defeat Jiang Qin and Gan Ning without having the bridge destoryed
Zhuge Liang Battle of Tian Shui, Shu Forces. Defeat Xiahou Mao and Cui Liang and capture the castles. Then, defeat Jiang Wei before he gets to Tian Shui Castle.
Zuo Ci Hu Lao Gate, Allied forces: Kill Lu Bu on hard mode.

Chaos Mode  -  Beat Lu Bus Musou mode to unlock Chaos mode.

Opening Edit  -  Clear 1 Musou Mode of each of Wei, Shu, Wu and Other forces.

Unlock Credits  -  Beat any Musou mode for the first time.

Unlock Items

Arms Guards Battle of Si Shui Gate-Dong Zhuo's forces: Defeat Sun Jian before Cao Cao arrives with reinforcements
Art of War Battle of Chi Bi-Cao Cao Forces: Defect Zhuge Liang once his unit begins to retreat
Bodyguard Manual Guan Yu's Escape-Guan Yu's Forces: Defeat Zhang Liao and Xu Huang
Demon Band Battle of Xi Liang-Yellow Turban forces: Defeat Ma Chao within 3 minutes after he apper
Fire Arrow Battle of Ji Province-Yuan Shao's Forces: after defeating Zhang Bao and Zhang Liang, go and defeat Pei Yuan Shao
Green Scroll Battle of Jie Ting- Shu forces- Defeat Xu Zhu and Sima Yi in less than three minutes from when Xu Zhu appears.
Musou Armor Select the level, Conquest for Nan Zhong as the Nanman forces and defeat one juggernaut unit, then the ones left in less than five minutes.
Serpent Earrings Select Wu forces in the battle of He Fei and defeat Xu Huang and Xiahou Dun in less than one minute from when they appear.
Survival Guide Select Dong Zhuo's forces in the battle of Hu Lao Gate and defeat Cao Cao, Liu Bei, Sun Jian, and Gongsun Zan.
Tiger Collar Select the level, Struggle for Nan Zhong and pick Meng Huo's forces, then defeat three units that hold beastmasters in one minute or less.
Tribal Remedy Select Wei forces in the battle of He Fei Castle, then defeat Jiang Qin, Pan Zhong, Sun Shao, and then destroy the rams.
Way of Musou Select Shu forces in the battle of Mt. Ding Jun, then defeat Xiahou Yuan before Cao Cao arrives.
Wind Scroll On Battle of He Fei Castle, Wu side. Kill Cao Ren in 5 minutes.

Unlock Various Orbs  -  These must be done in hard mode.

Unlockable How to Unlock

Fire Orb Battle of Shi Shui Gate-Allied forces: Defeat 200 enemies within 2 minutes.
Ice Orb Battle of Guan Du-Yuan Shao's forces: Defeat Cao Pi with 4 minutes after the stage starts.
Light Orb Battle of Wu Zhang Plains-Shu forces: Defeat Cao Ren, Zhen Ji, and Xu Zhu within 5 minutes after the stage starts.
Shadow Orb Battle of Wu Zhang Plains-Wei forces: Defeat Jiang Wei while Zhuge Liang is still alive.

Unlock Various Saddles

Elephant Harness Battle of Nan Zhong-Nanman forces: Do not allow the enemy into the main camp. Rescue Wu Tugu, King Duosi, and King Mulu.
Hex Mark Harness Battle of Cheng Du-Liu Bei's forces: Defeat Zhang Ren within 1 minute after he appears with his ambush troops.
Red Hare Harness Battle of Chang Shan-Yuan Shao's forces: After defeating Lui Bei, Guan Yu, or Zhang Fei, defeat the remaining 2 within 1 minute.
Shadow Harness Battle of Liang Province- Allied Forces: Defeat Zhang Ji and Hu Zhen within 45 seconds from when they appear.
Storm Harness Battle of Guan Du- Cao Cao's forces: Defeat Yan Liang and Wen Chou within 5 minutes after the stage starts.

Extra characters

Unlockables

Cao Cao complete any 4 Wei musou modes
Cao Ren complete Cao Pi musou mode

Da Qiao complete Sun Ce musou mode
Diao Chan Complete Lu Bu musou mode
Dong Zhuo complete Diao Chan musou mode

Gan Ning complete Ling Tong musou mode
Guan Ping complete Guan Yu musou mode

Huang Gai complete any 3 Wu musou modes

Jiang Wei complete any 2 Shu musou modes

Liu Bei complete any 4 Shu musou modes
Lu Bu Complete 1 Wei, 1 Shu, and 1 Wu musou modes
Lu Meng complete any 2 Wu musou modes

Meng Huo Complete Zhuge Liang and Lu Xun's musous

Pang De complete Ma Chao musou mode
Pang Tong complete any 3 Shu musou modes

Sima Yi complete any 1 Wei musou mode
Sun Ce complete Sun Quan musou mode
Sun Jian complete any 4 Wu musou modes

Wei Yan complete Huang Zhong musou mode

Xiahou Yuan complete Xiahou Dun's musou mode
Xiao Qiao complete Zhuo Yu musou mode
Xu Huang complete any 3 Wei musou modes

Yuan Shao Complete Cao Cao musou mode
Yue Ying complete Zhuge Liang musou mode

Zhang He complete any 2 Wei musou modes
Zhang Jiao Complete Liu Bei, Cao Cao, and Sun Jian's musous
Zhu Rong Complete Meng Huo's musou
Zhuge Liang complete any 1 Shu musou mode
Zhuo Tai complete any 1 Wu musou mode
Zuo Ci Unlock every other character