Exactly as title entails. Removing the mod leaves the kill count objective window behind without any way to clear it other than using console commands, which disables achievements for the save.

+1

Also, please allow it to be hidden (with the mod installed) with hide-mod-guis.

I’ve forked your mod into ‘Kill Counter Improved’: https://mods.factorio.com/mod/kill-counter-improved

It adds a toggle shortcut (button and keyboard shortcut) and makes a couple other useful changes, like hiding the window title unless objective is enabled.

I’ve also updated it for 2.1 (which only required a version number change). I hope it’s okay, and all thanks goes towards you and seky16 for the original code.