To improve these skills I recommend to listen to music while playing deathmatch. When you listen to music, you don't hear every steps so you have to check more places. It's better than muting the game, because you can still hear some things...

Title. When I first read about the +3% XP I though it was the classic case of something that seems small but when constantly added it becomes very noticeable... it is not. Let's do some math. 3% of ALL daily missions in the BP= 2000x2x...