I must be stupid, I can't get around the rocks to get to the chest in level one. But somehow I managed to get to level 2...
I don't want to give away too much of the answer, so I'll just say that one of the characters in the maze gives a hint;
and the keyboard key you need is available early in Level 3.
That should get you on the right path. I love this game, so please post again if you need more clues.