Rockman 2: Yendor Code is a ROM hack of Mega Man 2 by romhacker Yuki Miyuki. Unlike many romhacks of the game, the graphics and the music essentially remain unchanged. Yendor Code instead focuses on modifying the special weapons, level design, enemies, and the bosses, making the game slightly harder overall.
longbao here goes through another Mega Man 2 romhack journey and beats Yendor Code as fast as possible.