2-2

Hop onto the rooftop. As you move right, dodge the first lamp that drops from above by doubling back as soon as it starts to fall, just shortly before the first Roderick Rat. You can tell when a lamp is going to fall because when all the other lamps very temporarily turn dark, falling lamps will stay light.

Follow up the first Rat with a second Rat, third and fourth Rat, avoiding some more lamps in the meantime. Rats that have a fan will throw it out and the fan will move back and forth once even after the Rat has been defeated.

When you get to the fifth and final Rat, bounce off the top-left corner of its head and bounce back left to avoid the first lamp.

When going right, be sure to move fast as you will be bombarded by falling lamps before finally hitting the stage exit. Press down and hold right to make your Dash move.