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Two-Story

Great

Nice logical map. Thanks!

DISCLAIMER:
Read my profile before reading the rest of my comment!

The puzzle is there but there are a few things to fine-tune. Use antlines as much as possible. The square and x can be fine-tuned to be antlines. Antlines not only tell the player what activates what, they can also tell the player where to go next. Just rearrange some test elements, use light strips to force the antlines to change directions, and use some antline tricks found in my profile screenshots. I didn't need the excursion funnel.

Try my SP map?
http://www.steamcommunity.com/sharedfiles/filedetails?id=192976369
Try my COOP map?
http://www.steamcommunity.com/sharedfiles/filedetails?id=181160432

Great chamber, had me thinking. Good job, thumbs up.

Would you mind trying mine?
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=196197753

It's not as difficult as there's just one element that's hard to notice exists. Here is my playthrough: {LINK REMOVED}http://www.mediafire.com/download/ga3je1j7cnmof25/my_demo40.7z

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=196261391 my chamber play and bote

Easy to medium difficulty. The only flaw I found is your spelling of the word "flaws". Must be the controller:) Good PETI chamber.