Easiest Way (That I found) to get 200 kills in survival: Weapon: FN SCAR Perks: Max Base HP +250, Max HP +1000, and then do hollow points, The FN SCAR has a really fast reload and has great damage to fire rate, the extra health helps too, I hope this helps, like if you agree
Stolen from BZS Gaming but I edited to help make it better and easier for you.