The Doomwheel does D6+1 Impact Hits. In the case of a Doomwheel hitting a friendly unit, resolve Impact Hits immediately after contact and then move the Doomwheel back an inch.

In a close combat the Doomwheel uses the Attack profile for the crew, representing the Warlock Engineer striking blows as well as the swarming rats who power the treadmill. The number of Attacks is random (2D6), rolled separately for each round of combat, as the rats range between violently aggressive and utterly worn out by their treadmill duties.

The Doomwheel itself does a Grind Attack at the beginning of each round of combat in which it did not charge. The Grind Attack represents the giant wheel spinning in place to crush foes. A Grind Attack does D3 automatic S6 hits against one enemy unit in base contact, distributed as per shooting.