Mega Man 4 Walkthrough

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

Ring Man's Stage: Space Simulator
Slide across the 'rainbow' and climb the ladder.

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