Warriors Orochi 2

There are only 28 dream stages. As for unlocking them, either unlock the required characters to play the stages, have the combined levels of all ur characters very high, the combined proficiency levels of all characters very high, and have certain characters maxed out and/or with 50 proficiency. takes a while to unlock all the stages.

1.) - Have Cao Cao, Liu Bei, and Sun Quan each reach level 50
proficiency.
2.) - Have Nobunaga, Hideyoshi, and Ieyasu level 50
proficiency.
3.) - Clear Sengoku/Samurai chapter 2, Wu chapter 4, Orochi chapter 2.
4.) - Clear Sengoku/Samurai chapter 2.
5.) - Clear Sengoku/Samurai chapter 3.
6.) - Obtain 15 different Ingredients/Treasures.
7.) - Clear Wei chapter 3, Shu stage 3.
8.) - Obtain all Ingredients/Treasures.
9.) - Clear Wei chapter 7.
10.) - Initially opened.
11.) - Clear Wei chapter 6, Wu chapter 6, Sengoku/Samurai chapter 4.
12.) - Clear Wei chapter 4, Wu chapter 5.
13.) - Clear all 5 story modes.
14.) - Clear Wu-8 final chapter.
15.) - Clear Wei-8 final chapter.
16.) - Have Gan Ning, Kotaro, and Zhang Liao reach level 99.
17.) - Clear 20 stages in story mode.
18.) - Have Huang Zhong, Xiahou Yuan, and Ina (-Hime) reach level 99.
19.) - Initially opened.
20.) - Sum of all character levels equals 1,820 or more.
21.) - Clear Sengoku/Samurai final chapter.
22.) - Clear Orochi chapter 5.
23.) - Initially opened.
24.) - Sum of all character levels equals 910 or more.
25.) - Clear 30 stages in story mode.
26.) - Sum of all character levels equals 3,640 or more.
27.) - Sum of all character proficiency levels equals 2,730 or more.
28.) - Clear Orochi final chapter.