What is Hits?

Hits (also known as Extra Hits) is a stat that causes attacks to repeat. If a hero or enemy has a hits stat greater than zero, every attack they use may be randomly repeated. The hits stat is the maximum number of repetitions.

Compare this to the Extra Hits option in the attack editor, which is not random, and only affects a single attack.

There is an attack bitset which causes the Hits stat to be ignored.