K/D but WINNING. first off if you are not willing to take one for the team play deathmatch.
ok this is my class set up:
DSG-1 with suppressor
Hammer with extended magazine
Frag grenade
Proximity alarm (people will return for revenge)
Stealth enhance
Retriever
And for small maps add reflex sight and rapid fire.
The most important thing is map knowledge so learn where the crash pods will land and try to anticipate
where the next one will land if possible always take the high ground you should be able to see the crash site if not move. your job is to keep the enemy off the crash site.
I often find 2 or even 3 players from the other team begin hunting me this is very good as they cant
hunt me and capture pods when this happens use hit and run tactics destract them as long as possible
allowing your team mates to hold the crash sites. if your team is losing or the scores are close equip your side arm and rush those crash sites i find getting close 2 hammer shots and a melee often does the trick.
Other things to note are always go for headshots. de-cloak fire fire fire re-cloak reload.
This is just the way i have been playing and having some success hope this helps and remember all your moves should involve the objective dont give snipers a bad name.
Psn: Alba-Sniper