Hey! Thanks for testing the game.
About the list, you can send it to h a g h g o o 3 3 AT g m a i l . c o m (thanks for the mentioning language errors, as english is not my mother tongue)
And the hint. I mentioned those two object two times in the game and they are fishingrod and blade(which you get from breaking the axe)
However if you made the sword before solving the riddle, the riddle becomes unsolveable (which the riddle maker must mention if you talk to him after making the sword)
If you don't have the blade there is one more ending you can get(two, if you count the secret ending, which is really small) just go north at the statue room
Edit:thanks for telling about rock and crystal. I will write a dialoge about them.
Edit 2: or maybe make the riddle having 2 answers? Hmmm