This issue may have already been addressed many times but the AI of the summon and the pets are still bad. My main character is a necromancer, I love the class because you can summon many minions to fight for you but the AI is really bad for example, when I fight bosses in dungeons or just your regular boss in the maps, I need to get really close to the boss in order for my summons to attack. As for the pet, I have a hunter in the past and whenever I go to maps that has obstacles that your character needs to jump over, my pet gets stuck and I will need to unsummon then summon it again. You can just allow the pets to by pass any obstacles except if the obstacles are character/boss/mobs skills ( like ice wall, fire wall, etc. ).