Pursuit

Giant Rats are extremely vicious and always pursue a broken enemy regardless of the Skaven player's wishes.

Overwhelm Enemy

Giant Rats fight in a huge and unstoppable mass. It is impossible for enemies fighting Giant Rats to lap round them because of their overwhelming advance. Conversely, Giant Rats can always lap round their enemy, even if they are beaten in hand-to-hand combat. See the Hand-to-hand Combat section of the Warhammer rules for details of how lapping round works.