In almost all game, the definition of an assassin is to attack the back row, which makes sense. I suggest modifying the assassin's skill to have a certain chance to directly attack back row, 20%-30%. The combination of knight and mage has always been the most powerful combination of PvE and PVP. Yolo in other classes is always at a low level, which reduces gameplay. Alchemist and Assassin will also be a second PVP combo after the assassin's skills have been modified, giving users more choice rather than making the knight and mage combo the only option for PVP and PVE. Let the game show more gameplay.