Why nerf ALL challenges?

You did not need to nerf all challenges.

Maybe a handful needed adjusting like suppression or getting 10k on King of the hill but you nerfed them all, how is getting 300 kills with assault rifles hard?

Almost all the challenges were fine and rewarded those good enough to do them, now they are just participation trophies, well done you played our game for half hour, here have a prize.

The suppression one wouldn't even be that bad if you hadn't implemented suppression so badly.