Thanks for the tip on my "Hallways" map. My friend is coming by sometime to be my lab rat and I don't want them to be too easy. XD Have you tried some of my other maps?

Hey! Thank you very much for commenting on my map. You actually found a flaw as those surfaces shouldn't be portalable :P

The actual solution is much easier, though. Here is a slight hint if you want it :)
You are supposed to reach the platform across the goo near the part marked as "3". Check what all the buttons do and you should get an idea on how to proceed :)

Best regards