«

[Gormash]

It's very easy, actually.

Use the F-key to ready and put away your weapon.
To attack you simply press the left mouse button to attack. Hold the button down for a slower more powerful strike (much like in Ultima Underworld).

That is for a standard attack (a chop). To make a sideways swipe attack as you move sideways, or you can make a piercing lounge if you move forward just as you attack.

Or, in the setting you can select "Use best attack", whick will always use the best kind of attack depending on the weapon you wield by simply clicking once (or hold-and-release).

Have fun...