Mega Man 4 Walkthrough

Toad Man's Stage: Rainy Sewers
From the start, head right, defeating the Rakasas(umbrella holders) and the Swallons and Coswallons(swallows), carefully jumping over the pits, and jump into the sewers. Inside the Rainy Sewers, drop down and defeat

Dust Man's Stage: Robot Scrapyard
From the start, head right, defeating the Sheild Attacker.