Before entering the boss room, players first need to go to the prison area, which is the key area to start the Dark Prison challenge. After the elevator descends, proceed along the passage, where you will encounter an elite monster. This elite monster is moderately difficult in normal mode, but in hard mode, its combat power significantly increases, with both damage and health being notably enhanced. Therefore, it is recommended that players ensure their equipment is sufficient to handle the battle before the challenge. After defeating the elite monster, it will drop a V3 card, which is an important item to enter the subsequent area. This card not only unlocks the path to the Dark Prison but also opens the hidden gold chest in the prison area. It is recommended to collect all hidden rewards before heading to the boss room to enhance overall combat power.

After entering the Dark Prison, players need to continue along the passage until they reach the door of the boss room. Before entering the battle, it is recommended that the team make tactical adjustments to ensure each member is clear about their responsibilities. The boss's combat mechanism is different from regular enemies; it does not have traditional weaknesses, and simple firepower suppression is unlikely to be decisive. Therefore, it is necessary to use the scene mechanisms reasonably to create opportunities for output. At the beginning of the battle, the boss will be in a defensive state, and players need to reduce the boss's shield value to make it enter an attackable phase. During this process, the boss will release multiple area-of-effect attack skills, so it is recommended that players keep moving to avoid being focused on a fixed position.
The core mechanism of the boss battle is the "traffic light" system, which is also the most distinctive part of this battle. In the boss room, players can see a device similar to a traffic light. When the green light is on, players can go all out, and when the red light is on, they must immediately stop attacking and retreat to a safe area. If players continue to attack during the red light, the boss will release a devastating area skill, instantly depleting the players' health. Therefore, players must always observe the changes in the lights during the battle, arrange the output rhythm reasonably, and avoid team wipes due to operational errors. After the boss enters the attackable phase, it is recommended to focus fire and pay attention to the dynamics on the battlefield to avoid being disrupted by minor monsters or the boss's skill releases.

Teamwork is the key to success in the battle. In high-difficulty modes, the boss not only has stronger attacks, but the number and strength of minor monsters will also increase. Without reasonable division of labor, the battle will become abnormally difficult. Generally, the team needs to assign DPS players to focus on the boss itself, support players to control minor monsters, and tank players to attract the boss's attention, ensuring the overall survival of the team. After the boss's shield is removed, all players need to quickly enter the barrier area to concentrate their attacks, otherwise, the output efficiency will be greatly reduced. Additionally, it is recommended that players carry enough recovery items to use in critical moments to deal with the boss's high-damage skills.

In summary, the battle against the hidden boss in the Dark Prison is not just a straightforward fight, but a challenge that requires strategy and team cooperation. Players need to flexibly respond to the boss's mechanisms, proficiently master the traffic light system, and reasonably arrange team roles to successfully defeat this powerful enemy. Although the difficulty of the battle is high, after completing it, players can obtain generous rewards, including rare equipment, enhancement materials, and hidden achievements. Therefore, as long as you master the correct tactics and continuously improve your operational skills, everyone can successfully conquer the Dark Prison boss and write their own victory story in "Seven Day World."