1. The nightmare of Identity V can be obtained by participating in the unfinished nightmare in the third act at the time of reunion.

2. Participation conditions: Complete the main plot that will be launched after the maintenance on November 11th.

3. Method: You need to click on the entrance to this round of limited-time activities to participate in the limited-time copy [The Unfinished Nightmare]. Players will act as survivors against the regulator "Nightmare". Then, players can clear different stages of the limited-time copy [The Unfinished Nightmare] and advance the memory restoration progress. They can then complete personal tasks to advance the progress of all server tasks, and obtain memory fragments and event-specified rare fashion fragments. Finally, when the cumulative task progress of all servers reaches the corresponding value, all players in the server can receive corresponding rewards, and the highest reward is a new character ["Nightmare"].

The above is the relevant content about how to obtain the nightmare of Identity V. I hope it will be helpful to you!