Effective use of obstacles is very important to a Tagger, once can easily use a wall to provide better cover for ones self. Simply by standing in a doorway one can reduce the number of directions you can be shot from. Taller players may find that shooting over certain walls is possible. While ghosts may find that even small walls and obstacles can shield them from sight. Similarly ghosts may find that by moving, and faking around an obstacle he/she can sometimes get on his opponents back very easily. Quick triggers can easily keep duelers at a greater range simply by keeping obstacles, such as low hanging walls in between themselves and their opponents. By having your back to a wall, you prevent your back sensor from being able to be shot, though at the cost of maneuverability. Remember the things built simply to be in your way can be your friends.