Strategy for a fight in Aion game

To begin with a fight, you choose a target. The target can be a monster, humanoid, or Daeva. There are several ways to select an enemy to attack. The simplest way is to left-clicking on the enemy. Double left-clicking or right-clicking on an opponent will result in specifying it as a target and auto-attacking it as well in the case it is within the range. The other way is to use the TAB as a key. This attacks your enemy within your visual range. If it is used more than once, the following target is the next closest one you can see.