I'm hoping your description is sarcasm, otherwise... :-/ Did the same thing as quaternary in the turret section. Never saw the portal surface by the turrets until I landed on the light bridge. Got the second cube simply by flinging from the wall by the dropper. Don't know if that was your intention or not. Then it was just A B C D then exit. Less than 15 minutes.

Quite straightforward, took about thirty minutes, and most of that was waiting for my computer to load quicksaves let's be real. Turret part... is pretty dumb, because getting through it is just dumb luck (or, you can throw the cube over the wall ) :)

I think it could use some major reorginization as well - using the maximum size of the PTI editor is a nice way to make a fairly empty test.

Took me exactly 59mins. Not bad, a little big though.