Question: how to tell the difference between a scav and pmc?
Answer: The basic gist is that the PMC is your main character that you get EXP for playing as, but you're in a lot of trouble if you get killed. On the other hand, they do have some advantages compared with Scavs. Speaking of, playing as a Scav are high-reward / low-risk runs, but they do have a cooldown after you deploy them.