I've killed my colleagues' characters during RPG session, now they won't talk to me is closed with the following notice:
"Questions require a goal that we can address. Rather than explaining the difficulties of your situation, explain what you want to do to make it better. For more information, see this meta post." – Aaron Hall, gnat, Jim G., Masked Man, Rory Alsop
This is a quote from the end of the question (in bold, even):
My question is: What would be the best way to repair my work relations with my colleagues after such incident?
How is that not "a goal that we can address"? A lot of our questions are about work relations with colleagues. This is another one of them.