So far, it seems that the most interesting challenge are the vision fields. The fact that the talisman and skill points are inactive seem to make them rather challenging. Currently, I have worked out how to beat vision field V1 consistently, without requiring too much luck. I did it again, and I recorded it for anyone who might be stuck on it. It did take a good 7-14 tries for me. :P
Without further ado: Beating vision field V4 https://www.youtube.com/watch?v=hEQyCHZENv8
With that being said, I seem to be having a bit of trouble with vision field V1, but I have not really tried it that much, yet, so we will see how that goes. Any tips from the people who have beat V4?
Look at http://armorgames.com/community/thread/12407538/gccs-the-vision-field-walkthrough-thread
V7 is pretty hard, make sure you also get the link provided by UgAgh at page 3