Kaizo Breeze is a difficulty-oriented ROM hack of Super Mario World by BielDusty and naBerada. It was made in the spirit of Kaizo Mario World and other "Kaizo" hacks without being blatantly unfair like the early ones. And unlike many more difficult romhacks, this one can be beaten without the usage of advanced techniques such as shell jumps.

thegugafá here plays this Brazilian romhack and beats all twelve hard but short levels as fast as possible

There is a video by the author where he gives his commentary on how the run is done (Portuguese only).