The boneslicer is for Zach, the first trilobyte key is in the dark grotto B2 in a pool of liquid. (use your map to see where once you've explored a bit.) And the trilobyte cave is in the lower right region of the plains. Hope that helps. =]
I had the pleasure of beating the game over again using the demons because the chat wasn't loaded when I beat it the first time. Other than that, it was fun to play.
I would also like to see a multi-player option, as well as a few more achievements. The game itself was great and had me entertained at least for an hour. =]