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Weapon Cheats Guide!
от 
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
от Marik78
...
Console Commands, Trick for challenge maps, Camera Shy/Final Transmission location and more
от Ov3RT4K3R
Console Commands Trick for challenge maps Camera Shy locations Final Transmission locations Den locations and more...
Portal - Guide des succès
от Shiryu™
Guide pour réaliser les succès ! Ma chaîne Youtube ...
Transmission Received Achievement
от 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....
Portal complete, all in one video with set menu !
от XenDave
The set menu is a mighty help to find fast a chamber you looking for. Enjoy !...
Least Steps Challenges
от Jimo
I will demonstrate how you can complete all of the Least Steps challenges in Portal to work towards the Aperture Science Achievement....
Long Jump Achievement
от Remi
How to get the Long Jump achievement in Portal....
Прохождения бонусных карт на кол-во шагов
от Extragamer
...
Least Time Challenges
от Jimo
I will demonstrate how you can complete all of the Least Time challenges in Portal to work towards the Aperture Science Achievement....