Battletoads/Ragnarok's Canyon

Two enemies pop out of the ground; one in the bottom left, and one in the middle-right. Take them out with a charging attack.

A walker will warp in the center. Ram it twice, and grab the leg.

Two more enemies approach from each side of the platform. After they are defeated, a second walker will teleport in, followed by another enemy approaching from the wall.

Two flies can be eaten, just before another enemy bursts out of the wall.

Two flyers will try to swoop and attack. The first one can be instantly defeated by attacking while near the bottom of the screen, knocking it into the abyss in the bottom-right corner. The second is defeated by attacking as soon as it appears. Hug the northern wall, and jump across the waterfall.

Two enemies will burst from the walls, and the third will pop out of the ground at the bottom of the cliff.

You can grab upto four flies if you are injured. To get the 1-up, jump at the middle of the cliff before you encounter the boss.

Boss
The first boss will shoot a volley of lasers, followed by a ball. Grab the ball and throw it back to destroy the walker after three hits.