We have tried to test Killing Spree Announcer so I have enabled it on alt + b → Account → Sounds. Also turned on all sounds in options.
I do not know what this announce should be, but it doesn’t appear after 10 kills in a row. Tested in Gludin Arena and TvT zone. Are we doing something wrong? That announce is a sound or just a message in chat? We didn’t see/hear any of them. Maybe minimum killing spree needs more than 10 kills in a row?