I mean yeah, but I noticed sometimes it does not seem to be registering my kills or sth, I def killed more then that. So I am not sure if it’s a specific rules to this achievement that I am missing or otherwise, using tethering hunter on top of that

When you say you killed more you did that only with the weapon or you used the wepons with perks like voltshot,volatile or incandescent or dragonfly, becouse the quest registers only killes done only withe the wepons damage