to all players - there is exploit and there is ... exploit
1st - u stand infront of wall and spam aoe through walls with no way to see the player, u deploy turret or daemon or pet to keep it safe and let it target some1 through wall - exploit
2nd - u stand lets say in the keep infront of destroyed doors and spam aoe - sure u will hit some1 u shouldnt be; u let your pet to attack some1 who after a while los your pet but the pet keep attacking him even after he los - no idea if its exploit
and btw before u start pm some rage about playing OP class XD and using exploits, check your combat log, sometimes u will see you were killed by gun blast ....

(for some angry SH with love)