Dungeons And Dragons Online: DDO News: More on the Combat System

If you've ever wanted a good, brief description of the basic mechanics of the DDO combat system, Xundau has a post that may very well satiate your hunger:

* Making the attack connect -- if an attack doesn't physically connect, nothing's going to happen. So if a hill giant's about to attack you, and you back off or tumble away in time, the giant won't even get a to-hit roll against you. We will rarely if ever be moving your avatar for you, but some skills, like Tumble, will help you get out of the way faster. Also, some attacks are impossible to dodge, like magic missile.

As per usual, there is more for you to read here, including the resolution of the attack. So... get reading.