By beating him soundedly

You drive your elbow hard into his ribs with every ounce of strength your body possesses. The impact makes a satisfying crack, like autumn leaves underfoot.

He grunts in pain. His grip loosens.

You twist in place, and slam the back of your head into his nose. The wet crunch of cartilage breaking echoes. Blood sprays across your shoulder in a splatter of darkened red.

Before he can recover, you drop your weight, spin inside his arms, and drive your knee straight up between his legs with vicious precision.

The thug lets out a high-pitched, strangled wheeze and doubles over, hands reaching for his wounded nether barnacles.

He's at your mercy now.