No idea to to complete "Like A Perseus" archievement....Help needed..

There does not seem to be a way to get more rocks. I ran to the farthest left and right the game would let me, had to use 10 of them on the bridge. After that all I could do was sit around and wait for my corn to grow so I could eat, and wait for the next day, as I had no stone to build anything else. Am I missing something?...

I'm trying the demo, is it normal that the night creatures don't move forward when the fire goes off? they stop when approaching the fire but should they not keep on moving when the fire is extinguished? thanks

So, how do you get these achievements? I just won the game, thought I would lead the knights to the enemy tower and get The Dark Tower achievement but it wasn't like this. And I thought I would use knights to kill some medusas and get the Like a Perseus achievement but I didn't even get the opportunity to enjoy the knights. also, how do you get a trophy to unlock whatever the hunters have to offer?...

If I try to use a chest and I'm near the intro/tutorial thing, it pops up both windows, but then after I dismiss the chest, my mouse disappears and I can never click to dismiss the help window, and the mouse stays hidden when I try to build things, etc. Exiting the game seems to be the only options. Was just killed because I was unable to build anything in this state, so I exited the game and when I came back in, I was dead (I was, admittedly, at 1 health and near some enemies when I exited) :(. Slightl...