The Knockdown Mania Super Soup.
Knockdown Mania! is a Super Soup that is first found in the Scullery. It is represented by Cooper's fist, which is also used for the No Weapons challenge.
This soup allows Cooper to use full knockout attacks instead of having to build up a combo. This is helpful for Limited Attacks challenges because it can drain a good amount of Heart Points without wasting attack allowances. It lasts 22 seconds.