Lets just start with the criticism right now.
"That one thing is way over-powered. I don't even have to do some other thing to make it a challenge. I just do some maneuvering and maybe some aiming and after more than zero trigger pulls my target dies. I don't do that one thing because its cheap, but other people are doing it all the time, and its only going to get worse. Its not a matter of learning how to play, its a matter of this thing being so much better than that other thing. I'm sick of getting killed by this thing.
Furthermore, this other thing is way broken. I've done an in-depth analysis using numbers I made up with no knowledge of the underlying mechanics and I concluded that this other thing does not do enough damage relative to some other thing. This is my favorite thing to do, I'm good at it, so it should be able to do damage like everything else. Fix this now DEVS!"
Phew, glad I got that off my chest.