Part 3

You'll start by walking to the first ledge ahead. Jump onto it and throw a rock at the slime monster. Keep walking up the hill.

Drop down on the right; you'll land next to another slime. Make sure to duck down so you can actually hit it, then deliver the killing blow.

After the slime is dead, walk forward into the cave until you reach a wall. Jump up onto it and climb to the ceiling.

While hanging from the ceiling, head left and crawl up to the next platform. From here, climb another wall on the right, up to the ceiling. Don't rush across just yet.

Hit the slug on the ceiling with a few rocks to defeat it. Then, proceed left and climb around the corner, up another wall.

As you climb, you'll see several worms. To get past them, simply jump to the second wall. Since the walls are close together, you can hit the worms as you pass. This will lead you to open air again.

Climb the walls until you're completely out of the cave, then drop down the first stair on the right.

There are three green birds in the air ahead. From the second stair, jump up, and you'll be able to hit them with a rock.

Once the birds are dead, jump across the first few rock platforms. Keep an eye out, as the third platform contains a valuable health increase.

On the fourth platform, you'll encounter three more birds. Jump up and shoot them before they get a chance to attack you. Then, jump across the next two platforms.

Stop when you reach the platform made of a single block. There's a red frog on the platform just ahead. This frog grows and shrinks, but it's only vulnerable when it's small. Wait for it to deflate, then jump up and hit it. When it inflates, stay on your current block and duck down to avoid the projectiles it tosses in all directions near the upper half of the screen.