Scratch

There is a good two-player game I know of that kind of fits the theme:

Each player starts with 3 bullets.

At each turn, you decide to:

Reload: Add 1 bullet to your gun. If the other player shoots you while you do this, you lose.
Shoot: Attempt to shoot the other player. This costs 1 bullet. If the other player shoots, no-one wins and you shoot each other. If they defend, you have wasted the bullet and the game goes on. If they reload, you win! If they use the Super Attack, you lose.
Defend: Do nothing this turn, but you can't be shot, except by the Super Attack.
Super Attack: This costs seven bullets but it amazingly powerful. When you use it, you win instantly, unless the other player uses it as well, and you shoot each other and no-one wins.

You both reveal what you did at the same time, like in rock-paper-scissors.

WAYS TO WIN:
Use the Super Attack when the other player doesn't.
Shoot the other player while they are reloading.

WAYS TO DRAW:
Both players shoot each other normally.
Both players use the Super Attack.

WAYS TO LOSE:
Reload and the other player shoots you.
The other player uses the Super Attack and you don't.