"If there's an obstacle protecting you from enemy fire, you can start the fight with a charge-up attack.

The "Stealth-charge" is a trick that allows you to do a charge-up attack while moving around.

1. Hold down your "Left mouse button", and right after, hold down your "Ctrl" button.
2. You can move around while holding down your Ctrl button(charge-up is being prepared)
3. Release both your L.mouse & Ctrl and click on the target.

The charge-up attack has a greater range than any other attacks, so you'll usually hit more enemies than usual.
Also, it has a very high daze chance & has a high chance to ragdoll your enemies."