Me likes. Maybe if you win without dying...Or something more convoluted like the JC thing.
Ahahaha, I love the idea of winning without dying (something that will no doubt be ludicrously hard) allowing you to fight Saxton Hale.
I was thinking about TF2RL a bit more.
Tactics: Like the old DoomRL, you have "Coward", "Cautious" and "Aggressive". Some classes also have special tactics, like "Double Jumping" for the scout.
Free Shots: Every 10.0/6.0/2.0 seconds (depends on tactics, aggressive is better) you get a free shot. This shot costs ammo, but happens during the delay in your move. (eg. if you're playing pyro and you move, that takes 100 ticks. You then get a free shot, which happens during the 100 tick delay before your next turn.)
So if you're running away from someone, you can choose "Coward" to get a better dodge chance or "Aggressive" to take more potshots at your enemy while you run. This also means if you're willing to stand still in aggressive mode and attract bullets like an idiot, your DPS will go up by 50%.