Sam Fischer needs to rescue an undercover CIA operative in Kishasa. He can do it the perfect way or the immersive way. Is one better than the other?

Let me explain.

The perfect way is to get a 100% stealth rating at the end of the mission which usually involves avoiding contact with the enemy and leaving no traces of your entry and exit. That may require a greater number of saves and retries to achieve this as there is some trial and error in what works and what does not. In addition, complete all the objectives requested by both NSA(government agency) and JBA(terrorist organisation) which gives you higher levels of trust and can also unlock equipment for you to use.