Portal
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Popular Steam Guides Written guides, references, and walkthroughs
Portal How to spawn objects and npcs
by Henry
This Guide tells you how to spawn NPC's (Non Player Characters) Weighted Boxes Weighted Spheres....
HOW TO GET STUCK IN CHAMBER ONE
by ⎛⎛Mµshroomlµvǝr456⎞⎞
HOW TO GET STUCK IN CHAMBER ONE....
Game Walkthrough + Getting All Achievements
by TroLL
This guide provides a video walkthrough of the game, as well as the walkthrough of challenges and advanced maps. Also along the way you will find out what achievements you can get....
Weapon Cheats Guide!
by 
This guide will suprise you of how many weapons there is in Portal! You will need to know how to open up the developer console....
Camera Shy (with screenshots)
by Mister Jarate
No description, numbers only...
Every challenges
by Xorven
Languages : English, 简体中文, 繁體中文, Dansk, Nederlands, Suomi, Français, Deutsch, Italiano, Polski, Português, Русский, Español, Svenska, Türkçe....
Transmission Received Achievement
by lonerunner
This guide is intended to help you easier find all transmissions and set them to their final location where they should receive transmission....
Получаем все достижения в игре Portal [15/15]
by Marik78
Гайд о достижениях в Portal. Как можно получить всё достижения. Также я снял видео для вас. Смотрите и читайте как можно получить то или другое достижение. ...
Least Time Challenges
by Jimo
I will demonstrate how you can complete all of the Least Time challenges in Portal to work towards the Aperture Science Achievement....
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....