You wanted hard, so you've got hard.
I have been meaning to attempt an isometric maze for some time now but have not found the time, but here it is at last.
This one is based on the Queen's Maze by Adrian Fisher.
Your task is to enter the puzzle by the pathway at the bottom left and navigate your way to the center.
Each square has a number which indicates how many squares you must 'jump' for your next move. As you move to each 'jump' square your next paths will be shown, travel along whichever path you like, but do not fall into the water.
If you fall into the water then the blocks will sink and you must start again.
This is a very complex maze but it can be done, without cheating, in 20 moves.
You may use this method on your personal 'non-profit' web site without seeking my permission. A link back to CSSplay is always appreciated.
Commercial usage is also permitted without seeking approval, but I would ask that a donation is considered to support my work on CSSPlay.
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Please ask permission before using or copying this example to your web site.