This is a statement of someone else that ı shared to elsewhere before; ı want to share it here too:
" RE6 is probably one of the best modern Resident Evil games imo. Not only did it deliver great gameplay and atmosphere, but it did the characters and plot justice in general. People can say whatever they want with RE6, but the matter of fact is that the narrative was actually really good when you focus on the core aspect of the global problem with bioterrorism as the series evolved. The plot twists were well executed, along with each theme of the following four campaigns;
- For Leon's, it delivered a theme of both acts of justice and redemption. Justice for the fact that Leon is a character filled with determination to do the right thing and find justice among those that cannot see it for themselves. Redemption, because Helena thought of herself as guilty for her sister's death in failing to protect her and for her assistance in the assassination of the president, but proved that she was not far from redemption in the end after everything she's done for Leon and everyone else around her throughout the bioterror incidents.
- For Chris', I gotta first say that I'm still confused as to why some people think of his campaign as "full-on Call of Duty" when his campaign has little to no similarities with such franchise, especially when the campaign still focuses on bioterrorism rather than just civil wars or territorial annexations. His chapters are also quite similar with Jake's campaign, with the only difference of having a whole squad to direct under his command whilst combating BOWs on a rampage in China. Sure Edonia was in the middle of a civil war, but after C-Virus injections took place, it took a death turn, much like with what happened in Damnation with a country having access to the black market for both licker and parasite BOWs. And yet I still hear no one complain about Damnation looking like a "Call of Duty" film-style but I guess that's just the hate wagon with RE6.
Anyway, with that out of the way, Chris' campaign focuses on both heroism and sacrifice. Heroism for the fact that Chris is always on the lookout for his teammates but his mind gets degraded into insanity from time to time as he sees his teammates die one by one, triggering his PTSD and blind anger. Despite those setbacks, he is always determined to protect those around him, even if his failures try to blind him from doing so, no matter what, which is exactly what makes him a character of being an actual hero. The theme of sacrifice is similar to what I said above, with the addition of Piers willing to sacrifice everything he's got, including his own sanity for the sake of saving the one person he looked up to and saw a hero within.
- For Jake's it's all about acts of trustworthiness. We see Jake initially being distrustful with Sherry and Sherry seeing Jake as just some guy who just doesn't care about anyone but himself. As the campaign progresses and we see them both trying to survive in the snowy mountains with a heavy blizzard roaring at them, they begin to grow an emotional bond together, making Jake even more determined to help Sherry get what she first wanted to do; save the world by donating his blood by the time she starts having doubts about Simmons and if the world could ever be saved with him in the way. In the end, because of their mutual trust, they were able to survive together throughout their entire ordeals.
- For Ada, it was simply all about themes of both compassion and determination. Compassion because we see Ada, for the first time in the entire series, actually have deep compassion for people other than Leon. She seemed to understand the circumstances behind Helena's decision to have helped in the assassination of the president, bring in help to the son and daughter of two people she deeply had a bad connection with, sympathize with Carla about her hatred and feelings for Simmons, despite not being accepting of her actions, and put her main objectives aside to save multiple survivors in China from zombie attacks. We also see determination, because we see Ada determined not only to help those in need, but to also help bring down the mess that both Simmons and her own clone made in their methods to go against one or the other.
Yeah sure, you can say that Ada probably did all this just to clear off her name (the typical Ada way), but in the end, we get to see that Ada really does care for the well being of the chaotic world we live in, as she clearly states that what Carla has done to the world and human nature in itself is beyond sympathy of any kind, even if Carla really was a victim of the same violence she herself put to the world as well.
This is all my take on at least one of the reasons why I love RE6 in general. There's a lot more reasons why, but I think I pretty much explained a lot through my view on each of the campaigns already so I'll just leave it at that. "
It's an amazing statement that describes the story very well imo.