Me and my brother are doing this game jam together. Its our first jam and we are thinking of a platform fighter. Do we need to make an enemy ai or can it just be two player? and does it have to be mouse and keyboard only or can one player have to use a controller?

you can do it. it might be hard for us to rate it live. but we can play it not live.

also best of luck fam on the jam and welcome to the journey of gamedev.