Before we enter the arena of mobile war legends it would be nice we first know the duties and functions of the hero Fighter and hero Assassin, because the hero is also entered into the assassin roll and some are entered into the roll fighter
For example like hero zilong, alucard and lapu lapu, the three heroes are included into the hero fighter, but the hero is also included to the Assassin roller. In order to function the hero with maximum should first see the duties and functions of the fighter and the assassin
**Assassin and Fighter hero functions** 
If we see from Hero Assassin, it is functioned to kill the enemy one target, while in terms of function fighter bet that has a close-range skill attack and able to survive, because the fighter does not have great damage such as assassin
Hero assassin is also equipped with the ultimate that serves to finish off the enemy quickly, another case with the hero fighter, in addition to having sufficient damage, he also must have a good defense, in the form of armor and HP
**Assassin and Fighter hero duties** 
Seeing from the fighter hero we can assign to continuous damage to the enemy all the time, especially ketka war, while for assassin assigned as executor or finishing when hero hero enemy is dying that has been done by hero fighter before
**Role in War** 
In the role of War, fighter can have many roles, depending on the skill of the fighter, there is crowd control, there is also as blood drain and also as distraction
While in the Assassin, remain as true kilo hero, so when the fight is usually a fighter attacked after the tankers forward, while assassin must be patient first and monitor hero hero who is dying and then just attack
So when playing it later, you just adjust it, for example zilong hero in assassin we use only the item full damage damage and in action as a build fighter, you just use balanced items between damage and item defense
That's a little explanation about the difference of assassin and fighter, if you have any other experience, please add to comment field and do not forget to upvote, resteem, and follow my account @zulwalis
Regard succes @zulwalis