the perpetual testing Initiative expanded to allow you to design,enjoy Portal 2.
test chambers,this new mode forces players to reconsider everything they thought they knew about portals. success will require them to not just act cooperatively, but to think cooperatively.
we hope that with New guide of portal 2 become good at playing it.
portal 2 game Guide contains many useful hidden secrets and many more to break down all stages & missions of this game in order to use it toward your advantage, written by a fan, perfect for Beginners and intermediate players.
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