This makes it basically impossible to try and achieve 100% kills.
While playing, it would be handy to see the total kills instead of just your own, both in the alternative HUB and automap. I wonder why it shows the personal count anyway, but there was undoubtly a reason for that. You could also show both, like personal/total/max (e.g. 6/15/29).
As for the tally screen, I don't see a straightforward solution. If it were entirely up to me, I'd prefer an extra line in the tally screen for "monster infighting". Another option is to have the line "Missing" in the tally screen not include monster infighting, but then the total doesn't count to 100% anymore. (Then again, you might as well leave out the line that shows "Total" as it just shows 100% anyway.)
Thoughts?
P.S. I'm in the process of being able to compile the game myself, so I might work on this myself, if I get a green light. But it's quite a leap for a web developer to jump into this.
And with the conventions and agreements for a community project like this, I probably shouldn't think too lightly about it. 
Though I have a deadline for Friday next week and won't be able to invest in this until then. But since it's my own feature request, I assume there's no rush. 
And I'll need an answer to the question I raised 
Please let me know if it's OK and if this can be included.