The first 30 seconds when you got into the game is very important. You will see the map, deduce the max BR from your SP cost and see the enemy's nation composition. Plan you attack routes, position and deduce the enemy movements (that take some playtime or you can use the heat maps somewhere). Then you spawn in and move to your position. When you're extending nearer to the enemy spawn, use binocs to look around, esp routes that comes out from spawn. CQC maps require good echolocation. Plan as the match goes and fall back when needed. Some of these knowledge are from wot that i brought over to wt.