There's this general practice we do on another wiki, and that is putting, in a short but sufficely descriptive way, how/by whom a character was killed. For instance (PWAA1 spoilers, I highly doubt I have to warn here)...:
Cindy Block - Bludgeoned by Frank Sahwit
Mia Fey - Bludgeoned by Redd White
Robert Hammond - Shot by Yani Yogi
So for instance, Mia Fey's current "Deceased" box in her character infobox reads "Deceased (Sept. 5, 2016)" - With this change, it would then read "Deceased (Sept. 5, 2016) - Bludgeoned by Redd White"
We would be of limited description of the death; any form of shooting (regardless of shot placement or number of shots) would read "Shot by...", stabbing would be "Stabbed by..." and so on.