The atrocities in Tomorrow's Ark refer to the skills of an agent, not props or equipment. If you want a specific agent to have atrocity skills, you need to upgrade the agent to level 2 or above, and the skills tab bar will be opened. Under normal circumstances, the skills of agents are opened in turn according to certain hierarchical rules. When your agents reach the level of open atrocity skills, you can unlock them to learn the skills.
The skill openness and skill points of each agent are different, and players need to explore and learn one by one in the game. At the same time, the agent's skills need to be used at the right time in order to exert the greatest effect.