I'm going to count here on what Level in the Solution of Page is missing and at which Level the Screenshots are missing.
Level with no Solution on the Page:
Wondertown
Welcome to Wondertown
Things that make you go "Boom"
The Town Square
Hero's Shrine
The Plains
Useful Tumbleweeds
Through the Maze
Qookie's Cottage
The Foothills
Creepy Keep
Creepy Keep - The Entrance
Friend/ Foe
The Dungeon
This Place is haunted
The Moat
The Courtyard
Clearing a Path
The Foggy Mountains
The Wonderland Ice Fields
Avalanche Alley
Base Camp
Entrance to "The Cave"
Hide and Seek
Fire Island
Welcome to Fire Island
The Archipelago
The Volcano
Lava Outlet
The Volcano
Loof is lost
The Wasteland
The great Pyramids
Cloud City
Cloud City
Locked out
This Levels missing Screenshots:
The Plains
The lost Cave
The Foggy Mountains
The Ice Cave
The Cannon Cave
Kaboom! Cave
Foggy Peak
Entrance to The Caves
The Lost Wonderland Mine
Fire Island
Fire Island Bowl
Free Peegue
The Volcano
Toxic Mirage
All Alone
Loof and the Troll
Z-Bot Lair
The Secret Cave
The Wasteland
The Enemy
The Shack
Spirits of the Desert Wind
The Washout
The Void
Sequences
Stinker's Rescue
Btw. If you click on "The Ice Cave" is not right there the headline. Because again is "The Cannon Cave" as a headline.