I have attempted this GE commendation in several ways with all levels of difficulty and modifiers... As well as in all the playlist locations. I am able to kill over ten enemies well with 60 seconds. Tried it alone and with a friend. It does not award me the commendation 😔
Please update us as several people here and on Reddit have posted but no reply from UBI Soft.
And it's still bugged.
With them doing the rerun week was hoping they were going to resolve it so people could get it during the rerun - but it still seems to be bugged.
Massive please acknowledge. I'm concerned that with so many people having got the commendation during the original event - including massive people themselves - that the right people are completely unaware that it's bugged in the reruns of the event.