Blindrun
Now THIS is a good chamber. I was caught a little off guard at the start when I needed to get the cube. I like how you trick the player into thinking they need to deactivate the fizzlers and portal from top to bottom before they realize that's not helpful... they need to start at the bottom and use the faith plates to go back up!

But that wasn’t even the good part of the chamber; how the heck is one supposed to press the square button and run through the exit like a ninja? Good news; you don’t. This is one of the more cleverly hidden usages of the respawn mechanic I’ve seen. Took me enough time to think about how to link and move through each room to get where I needed both of the portals to be (one right beside the square button and one right beside the door. :P) Respawning eluded me as a potentially helpful move until I realized I could just grab the cube when it falls again off the glass platform which has the square button ...

Nothing’s dark (except the faith plate chain), nothing’s missable (except steps in logic, which are entirely the fault of the player), nothing’s annoying, no ninja BS required. Well done.

Difficulty: 4/10
Enjoyed: 7.75/10

The stacking made the room transitions almost one way. You can only go backwards past a cube on a button.

The only thing that through me off was I took for granted you need a cube in the cube button to open the door, but you only need it to get to the pedestal button. Besides that an easy going and fun puzzle, very creative with the faith plates.

Excellent test! Thanks to the commenters for giving me the clues to solve it!

@Stuntman: Oh, I didn't think that was possible. Hmm.

I see your walkthrough and i don't do like you...I never made the last manipulation with cube, i let it on the button next to the exit, i made 1 portal next to the pedestal button door and i shoot very quickly my portals for come back to exit :P

I love the fast portaling ! Good job dude :)

Nice. It was a little easier than the first, but still required thinking things through.

Wow, this is great! Figured it out when I realised the cube is disposable!

@toncica: I'm glad you found it challenging! (I'm noticing that I should really start toncica-proofing my glass walls, though... ~.~)

As it was getting late I almost aborted this challenging test. There is a point when I feel my brain shutting down and my ability to solve tests is seriously diminished. Usually I just stop but this time I forced myself to go on. Luckily it payed off after feeling a bit of panicking. The solution isn't that far away, but it's quite demanding to wrap your (tired) head around.
http://youtu.be/gwZ28jZNFxU

Getting the portals set up was very trying. My brain was almost smoking when it finally came together. The stacked chambers was a new experience for me . I liked that. Didn't see any exploits. Thanks. #F4F

@Elementalkin: For this one there's actually plenty of time, if the button and the door each have a portal right next to them. It's only hard if you try to do it by running. :) Watch the walkthrough linked to in the description to see what I mean.

Thanks for playing!

Here's a video of the first time I played it.

You can almost pinpoint the moment I got the solution.

Thanks, Jay!

Loved it! 9/10

I can't think of a single thing that would improve this map.