You can drop off from the high ground to scout the Camp from the high ground and to sneak behind. Take out the patrols there before moving in.
There are four Rippers worshipping a tied-up Freaker in the middle so you can ignore them for now and stealth-kill the other rippers or throw a grenade/ molotov in the middle of the pack to kill several of them at once.
The outer perimeter by the house ruins have unnoticeable early-warning traps. If ever you trigger them, you’ll have no choice but to take cover and engage the Rippers in a firefight. There’s lots of cover here and they’ll be stupid enough to leave cover and charge at you. Either way, you can eliminate them silently or just do it the normal way and blast your way through their reinforcements for additional exp.