Now I don't only play FPS but I also play flight combat simulators like Aces High II and Il-2 Sturmovick, and the thing I find most irrational is fighting twenty to fifty enemy ace fighter pilots alone. Now I have been doing these games since way the hell back when so I understand how to hold my own in a dogfight but in many cases you will find yourself in a situation that you are surrounded by countless fighters, the way to deal with this is try to learn how to handle a turning fight in even the worst turning aircraft (that including the B-17s and bombers like it) and also how to keep up your airspeed. Stay in the middle of the enemy formations so that way as they come flying at you they have to keep an eye out so as not to hit their own guys with friendly fire (and not to have a midair collision of course) as for you all you really need to do is make sure you're hitting anything that moves because you're alone. In one situation that happened recently to me I was playing Il-2 Sturmovick that I mentioned earlyier I was chasing down a Russian made aircraft in a Japanese Zero, I chased him down for about a minute before I noticed that I had a crap load of fighters behind me, I took down sevral aircraft and multiple unconfirmed. Remember what I said here, it may have been alot to take down at once but it can help.