Riven challenge

[(XBOX)A weedy Girl]

The challenge to kill dargyn pilot's in the air is bugged to hell.

I have to kill 2. First one counted no problem , the next 15-20 attempts (using the same method) didn't register.

I've lost count of the hours lost to riven challenges and its getting to the point where I just sell half of them as soon as I get them.

I dont know if DE think its a good thing to artificially inflate player time , but seeing as I turned it off out of frustration , I guess not.

Seriously , how many threads about buggy riven challenges does there have to be before something gets done about it?