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Popular Steam Guides Written guides, references, and walkthroughs
Portal - Complete Walkthrough
by Khonziel
Complete walkthrough in a single video....
Portal: Prelude - Complete Walkthrough
by Khonziel
Complete walkthrough in a single video....
How to disable blood on Portal
by RYNO MAN
This guide will provide information on how to disable blood/gore on Portal. This guide will cover two different methods for disabling blood/gore on Portal. It also provides information about the console....
Passage game +getting all achievements
by TroLL
This guide provides a video course pass of the game, as well as the passage of challenges and advanced maps. Also along the way you will find out what achievements you can get....
How to bake a cake
by did yoo rike it?
Perfect for birthdays, this is a great recipe for an easy, foolproof chocolate cake. It’s moist and fudgy and will keep well for 4-5 days....
The advanced chambers (glitches and shortcuts)
by Xorven
There's a little guide about the advanced test chambers. Achievements to unlock : Cupcake - Fruitcake - Vanilla crazy cake Good viewing ! ...
Rattmann Den Locations (Including Secret 6th Chamber)
by ♡ miss raine.
This guide will show you all 6 Rattmann Dens In Portal!...
All the challenges
by Xorven
In this place, there are the videos and the objectives of Portal challenges. Achievements to unlock: Basic Science - Rocket Science - Aperture Science Practice is required to earn these achievements. Good viewing ;)...
Camera Shy (with screenshots)
by Mister Jarate
No description, numbers only...
Least Steps Challenges
by Jimo
I will demonstrate how you can complete all of the Least Steps challenges in Portal to work towards the Aperture Science Achievement....