play super tight, keep looking around, and keep a pot of paint handy incase you need to reload.
Don't do a dead mans walk, anyone who does that is a NO GAME fool, who dosn't have the courtesy to play fairly in the sprit of the game. If you suck so bad that you think you have to do a dead mans walk, then just shoot yourself in the foot and walk off the field.
If your skills are sharp, you should be able to take at least one player, and if you catch players moving up in the open, may quickly stop or slow down their advance.
Don't leave your bunker, if they are any good they will shoot you.
Try to think like a mugger, if you could imagine how they will mug you out, then you might be able to guess where a mugger is comming from and shoot them in the open.
People have won 5 on 1 before, but it dosn't happen often. All you can do is play for some respect and make them work for it.