"Clueless" is a series of puzzles that you try to solve without any hints whatsoever.
The puzzles range in difficulty from
"There is no reasonable way I could have gotten all of those answers."
"OH! I know what this is!".
The idea is to figure out what it is you're trying to solve. If you do that, you have "won" the puzzle.
Filling out the answers is a bonus.
You can find the others in the series under "Take another quiz from MightyThor" > Words > Clueless Puzzle Series.
And I just added Clueless #20 :).
A suggestion for a next quiz: (parts of) "Alice's restaurant". Although it's quite repetitive I have the feeling it'll be too long even for this type of quiz.