Any tips for the sniper challenges?

Scope glare has killed the sniper class in my opinion, might as well just put up a beam when you pull the scope up.  The add on for diminished scope is like a 40 I think take years to get, for me anyways.

Operation Firestorm conquest and Liberation Peak breakthrough. Those are my sniping recommendations. Others will have their own favorites, but those are mine.

If you enjoy it, you will play it, and the challenges will just complete themselves naturally.

Breakthrough is where I normally do sniper challenges. Usually I try to get on the attacking side and pick off defenders. 

I just did one for 10 DMR kills over 100m on Liberation Peak this evening. I had to stay to the edges of the map still, though, as it was a bit tight, but it wasn't too bad. I also got 10 headshot kills as Recon by hanging back in the spawn on Empire State, when the first sector was being attacked. New Sobek city doesn't seem bad for them either. 

I'll give Breakthrough more of a chance, but so far it's been a bit messy with the recent changes they made. I'll give them a go. 

And yeah, I did notice the glint on this title is a lot stronger than it has been previously. 

Just had ave to do them… breakthrough (not casual)

I do the 'challenges' on Casual Breakthrough because I cannot snipe very well : some of my sniper shots are from a few metres away (but they still count....)!!!!

I recommend the Manhatten map, and get on a rooftop other than the objectives. I have gotten 20 to 30 kills a game sniping there