In this online puzzle, you do not have to stress over one particular level for weeks on end. Instead, you can try any level at any time. In the end though, you need to solve all of the levels to arrive at the final answer.
The solution to each level is one word in all lowercase letters, no numbers or symbols. If you think you've found the solution to a level, try entering at as "http://hexaditidom.tripod.com/newriddle/____.htm" to confirm your solution.