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Reaching the top of the room8 hints left
This is a huge room - and if you look up, you'll notice the way ahead is quite high up.

How do I get up there?

There's a slanted platform here, directly opposite the way out. How could you get up there?

Hmm...

It's quite high up. You'll need momentum to reach it.

Help me reach the platform.

On the opposite wall, you can create a portal on top of a slightly lower slanted platform.


Put a portal on the ground below it, and you'll get just enough height to see the top of the other platform - and can repeat the process to reach the exit.

What's next?

The turrets aren't quite done with you yet! Quick, put portals below them before they shoot you dead!

What now?

This room seems like another dead end - where did those turrets come from?

Hmm...

If in doubt, look up. There's a hole in the ceiling that leads to anothe room.

How do I get up there?

As always - momentum!
Put a portal below the hole, then create another on the ground in the huge ambush room.

Jump off the ledge to land in your portal at the bottom, and you'll have enough height to land in the next room.

Guide help

This is the low-spoiler guide for "Reaching the top of the room" puzzle in Portal. Unlike in normal walkthrough, you get gradual hints on how to solve the puzzle. Click the big button below to see your first hint. If the hint contains a spoiler, you will be warned about it before clicking.

Up to "Escape Part 4 (In the Sewer)"
Hints written by Kieron West
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