First off, I love the level! Very well done!

However, I am stuck. Help, please. Just enough to get me going again - I don't want to spoil the whole thing because i'm really enjoying it.

I've got the first cube and Portal Gun by pressing the button in the first room, using the box to hop up to the vent and crawling through to drop down on top of the cage by the chute . I got the second cube by crawling up the pile of round robot heads and using the first cube to hop over the metal cages to press the button .

Now, I can get across the fire easily enough and into the room with the turrets. From here I can see two ways to go. First is the corridor to the left as you enter. There's an arrow pointing up at the very end and a door up there, but I can't get to it with two boxes. The other is the room with the blue misty gates. I get get the box to drop, but I can get the box out of the room. It seems like I need two boxes in the room to release the third, which is kinda impossible at the minute.

So, a clue on either of those issues would be gratefully received. As I say, just enough to get me going again because I really like what you've made and I wanna see what else there is to find!

Thanks!

Paul