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Popular Steam Guides Written guides, references, and walkthroughs
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....
Получаем всё достижения в игре Portal
by Marik78
...
Console Commands, Trick for challenge maps, Camera Shy/Final Transmission location and more
by Ov3RT4K3R
Console Commands Trick for challenge maps Camera Shy locations Final Transmission locations Den locations and more...
Walkthrought de Portal en español
by Eruen
Videoguía completa de Portal en español....
Portal - Guide des succès
by Shiryu™
Guide pour réaliser les succès ! Ma chaîne Youtube ...
Portal complete, all in one video with set menu !
by XenDave
The set menu is a mighty help to find fast a chamber you looking for. Enjoy !...
Transmission Received Achievement
by lonerunner | tradeswap.ga
This guide is intended to help you easier find all transmissions and set them to their final location where they should receive transmission....
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....
Least Portals Challenges
by Jimo
I will demonstrate how you can complete all of the Least Portals challenges in Portal to work towards the Aperture Science Achievement....
Прохождение бонусных карт на время
by Extragamer
Для того чтобы выполнить эти 3 достижения в Portal: 1)Основы науки - Закончить все испытания с бронзовыми медалями. 2)Настоящий учёный [/...