Portal: Prelude - walkthrough. (Portal)
In general, I downloaded, installed and immediately password-protected on the second mission. Who will tell you what?
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DVA
does not need to jump, but to gain height and place a portal on the floor,
no matter from a stationary or moving panel. with the moving panel is more difficult, but if it works, there will be no problem at all
Dima22_1998
In 18 challenging puzzle. When the cube moves, the platform moves more slowly. you must immediately put the portal on the 2nd floor (there is a cross there), and only then turn on the cube. then get up and jump to button 1, then fly to button 3 (it's easy there is a portal above it) and from it to the aquarium, and from the aquarium to button 2, quickly through the aquarium to button 3, and button 4 on the floor, it's stupid to run .Naturally, 3 anti-expropriation fields should be disabled. With the cube you need to get to level 19
Timafei
must come with a cube from 18. there will be a portalable panel under the stairs and utility rooms. We need to find a button there that activates everything. From there, by the way, you can return to level 18, if the cube is not captured))