Dyad 1.0
If you're talking about advanced chamber 15 then you don't necessarily need to use portal tunneling. chamber 15 with and without tunneling
I agree that it isn't an engine glitch, but I very much dislike it as a solution, and ever since Portal Pro I have gone to lengths to prevent players from using it to their advantage.
This map is amazing. (you made Portal Pro too? I love your maps) Anyways I am uploading a video onto Youtube of my 1st run through the map and was going to post it here if that is fine with you, in my run although I do not use it I think I found where Mot is talking about using Portal tunneling (I do not get why you don't like it, but to all his own I guess)
I also managed to get myself the cake, I was kind of disappointed that
My normal signature is ~100 pixels to big
Mevious, could you please explain what do the letters in this map mean? "U", "M", and such... Have I overlooked something?
(percentage calculation sphere self-test failed!)
108.1% done, -8.1% remaining...
Released here!
All maps for Portal (1/2) worth playing are mirrored here.
The letters are "E", "M", "H"
Hint:
If you're talking about advanced chamber 15 then you don't necessarily need to use portal tunneling. chamber 15 with and without tunneling
I agree that it isn't an engine glitch, but I very much dislike it as a solution, and ever since Portal Pro I have gone to lengths to prevent players from using it to their advantage.
Here is the link to the youtube part.
It only includes the medium part, from begining (When you enter) until the end (When you get the cube to the middle area)
http://www.youtube.com/watch?v=gisFNmMZoaE
Demo and portal were being idiotic and emancipation grids did not load properly when playing back -.- I'll make annotations to indicate wheather it was red or blue, although you should remember.
Portal Maps - Motanum's Cheating Test [3 map pack and 2nd place winner]
Portal 2 Maps - Slanted Bridge | Main Four | Juggling | Wall Bridge
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Here is my first run through your chamber, with also getting the cake, in 1080p. 
Blind run through Dyad
My normal signature is ~100 pixels to big
I just did a speedrun of your map by using the command "sv_bonus_challenge 3" to get the challenge timer on it I then quick-saved in the elevator so I would not have to type that in every time I restarted, since you do not use glitches or portal tunneling I avoid using them in this map, I do not know why but when I get to the end elevator it says "Cheated" do you have to enable "sv_cheats 1" to get the 2 sets of portals or what?
Anyway here it is, I did it in 4:48.
Dyad Speedrun
My normal signature is ~100 pixels to big
Nice speedrun.
The answer is the sv_cheats is required for the duel sets.
You can get get your speedrun time down even further because you're doing a few extra things in the H puzzle that you don't need to do. I'd say you can trim off 20-30 seconds off your speedrun time if you figure out how to solve the H puzzle more efficiently. You don't need to look for cheats or glitches (or even tunneling), you just need to solve the H puzzle differently:)
You could save maybe a couple extra seconds in E section too if you think about it. Probably won't save too much time, but likely a few seconds.
Nice speedrun.
The answer is the sv_cheats is required for the duel sets.
You can get get your speedrun time down even further because you're doing a few extra things in the H puzzle that you don't need to do. I'd say you can trim off 20-30 seconds off your speedrun time if you figure out how to solve the H puzzle more efficiently. You don't need to look for cheats or glitches (or even tunneling), you just need to solve the H puzzle differently:)
You could save maybe a couple extra seconds in E section too if you think about it. Probably won't save too much time, but likely a few seconds.
The first time I did this I had to go back and do the 1st part of the puzzle for 'M' as well, I realized I did not have to do it. I think I know the part in 'E' you where talking about I realized I could save a few seconds if I did it another way, I should have known that in 'H' I could skip the 1st part after I did it once, but I was only trying to get it below 5:00, I might try again to get it below 4:00 later today.
Edit: actually I take that back, I have no clue how to solve 'H' more efficiently.
My normal signature is ~100 pixels to big
Edit: actually I take that back, I have no clue how to solve 'H' more efficiently.
I think you are making some wrong assumptions about the H puzzle as it relates to the energy ball & catcher. Hint:
Ah, I see my problem I was thinking
My normal signature is ~100 pixels to big