It's not hard to move your mouse across as I assume they were all near each other it's something called "AIM"
You don't need aim with a gluon
Well I mean if he is scared to gluon multiple people it's an idea to actually aim in there direction rather then gluoning 1 person and retrying cus there is a second guy all I'm saying is it's not really hard to kill 6 people with a gluon all you have to do is move the beam over them like it's not challenging