Diferences between Pluto and Orcus.
If the key word for Pluto is "core", then the key word for Orcus is "context".
The aim with Pluto is to reach the core of our deep inner self to make a personal transformation. After that, we are a new person, and that finally changes our whole word. We have reached the next step in the individual evolution. The main theme to be carful with Pluto is: "we only have power over ourselves".
But with Orcus, what really matters is the context outside us, which we are part of it. The decision about life or death, about to continue a task or abandon it, are taken depending on the external situation, because with Orcus the aim is not the individual evolution (as Pluto), but the global evolution of the whole group which we are part of it.
Sometimes the only way to save the people close to us, is to renunce to life (like Silka at the begining of the movie "Brother bear", 2004). And sometimes the only way is fighting for life. It depends on the specific situation or context.