Knockdown Fighter feat

[Atalius]

Does this feat require a trip weapon also? Or could it be used with any two handed weapon?

[thenobledrake]

The feat can be used with any weapon, otherwise it would say what kind of weapons are required in the requirements section like Brutish Shove.

The benefit of wielding a trip weapon is that the item bonus (if any) of the weapon applies to the Athletics check for the trip.