You sprint through your enemies, striking at every one you pass.

You take the Dash action. During your turn, any time you become adjacent to a creature, you can make a melee attack against it using a weapon that has the dual-wielding or finesse properties. 

You cannot attack the same creature twice in a row in this manner or make more attacks than your proficiency bonus.

An expert parry turns a hit into a miss.

You spin around, gathering momentum as you strike your foes harder and harder.

Make a melee weapon attack against any number of creatures within 5 feet of you, making a separate attack roll for each target. For each subsequent hit after the first, you deal an additional 1d6 damage.

You focus on moving so swiftly and with such subtlety that nothing can stop you.

You react and attack quicker than the eye can see.

After rolling initiative, you can use your reaction to treat your initiative as if you had rolled a critical success.

With an array of quick, carefully placed attacks against the same opponent you throw them off their guard.

When you activate this maneuver, you take the Attack action and make a weapon attack, as well as any additional attacks granted by Extra Attack. After hitting a creature with a melee weapon attack, you can use your bonus action to make an additional attack against the same creature. 

On a hit with this additional attack, you can use your reaction to spend 2 exertion points and attack the same creature again.