[SP] Deja Vu
I've taken my first ever made and published map and played around it with some new ideas. So people who has played the original map may have some deja vu.
Credits:
Head Shot for beta-testing
Josepezdj for custom water texture
Brainstone for elevators instances.
Here are few mostlikely unintended final moves:
1oItjrheEi8
I'll take another look at this later.
EDIT. Turning upper row of tiles in black in the enter area fixes both the ways. The map is updated.
I'm with it, let's see if I can finish it, but let's call it a day for today. Goodnight.
EDIT
### SOLVED! Wow man, what a tough puzzle! 
A real challenge in such a small area. It's simply brilliant my friend. My deepest congratulations for coming with this idea!
The only part I'm not completely sure is when I leave the 1st cube at the last part so near of the fizzler to later destroy it because that jump from the cube to reach the bridge felt to meany, but the only way I could come up with.... I hope to hear your comments! 
Thanks again for creating this! Impressive.
Give the video around 2 hours....
EDIT. I've fixed josepezdj's way up. The map is updated.
Here's how I did it during the beta... Great map!! One of the most challenging in a long while
DejaDEMO.dem.zip
I guess that there is no other way now after the latest update... although to be honest, I really liked that way I did the final step 
EDIT
Grey, let me apologize for not insisting a little bit more and manage to complete the latest version. Since I already spent a lot of hours in this complex and awesome challenge solving everything except the very last move, I simply gave up and watched Headshot's soltution ... I feel so sorry if I disappointed you, my friend... it won't happen again
When i picked up the second cube i felt like the king of Portal, and then i think "ok now with 2 cubes it's an easy work"... well... it took me one more hour of hard thinking to solve it!!!
, wellcome to the community. I'm glad my work brings new ppl here.
toncica wrote:
I'm here to join the loser's club (hello jose) and admit defeat.
Hehe... well, even though I admitted I didn't eventually find the intended solution, I can't consider myself as a loser because I did find one solution :p
josepezdj wrote:
I can't consider myself as a loser because I did find one solution :p
Et tu, jose? Fine, so I'm the only member in this lonely club.
Some thoughts on the puzzle from a loser's perspective: It's possible to get trapped on the other side and then you have to kill yourself or you could get stuck between the light bridges and you have to reload the map. I'm sure you are aware of this and allowed those situations to occur to keep the design simple and clean. It's understandable since the chamber is so small, but it hurts the trust towards the puzzle. Maybe this led to me using the help of noclip to get the exact portal placements when I figured out how to get the second cube, which is kind of a defeat in itself. That was the easy part compared to what follows next, pretty bad prospects for an already unsettled player. While watching the solution most steps seemed familiar, I had thought of the approximate path without bringing all of it together. I've dismissed the idea of jumping off the cube because 1.) not sure if that jump would work at all, and 2.) too outlandish, it would feel to me like a break. At the time you can't help but wonder if there is a smoother way. That's why I think the puzzle should come with the advice that the way to the solution can be tough and rough.