Only got the game yesterday but in a duo most of what i did was hiding. My teammate got killed in the first few minutes, i had no weapons and saw the two other well-armed players who had got him right next to me, so i ended up just staying still for about 10 minutes until i knew they were gone. After that my next encounter involved me hiding in a bush while someone tried to snipe someone in the building right next to me, the two players inside didn't notice me when they ran out of the building to go after the other player. Because of that i managed to sneak up on them all and take out the 4 of them that were there before they noticed me. Was surprised i got to 5th place in a duo game without a teammate. Hiding and not attacking other players definitely seems like it can be a good way to play sometimes.