It’s definitely much more involved than Portal in terms of game mechanics, which seems to be what you’re looking for.
Honestly, I find it a bit too fast-paced. It was difficult for me to tell in which direction I should be running when entering one of those “directional portals”. In the bottom-right corner of zone 2, I had to hold right, enter a portal that pointed left, but I could still hold right with no issues, before entering another portal, after which I then needed to hold left, otherwise I would fall down to the bottom. All of that I needed to react in less than a second. If I tried playing slowly at that spot, I instead had the orange portal barrage me with rockets, freezing me at that spot. In the end, I ended up mashing buttons. I managed to beat it that way, but that’s surely not what you want.
In short, it’s very difficult, but that’s really the only negative thing I have to say. The concept and graphics are charming.