Cooperative Testing Initiative/Calibration Course
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 | “I can't get over how small you are!” This article is a stub. As such, it is not complete. You can help Portal wiki by expanding it. |
This is the first level in Co-op mode of Portal 2. Its purpose is to teach player the basics of Cooperative testing, like Ping tool, thinking with four portals, etc.
Hazards
- Goo
Walkthrough
- Blue player pings his/her favourite animal, afterwards Orange player pings his/her favourite element from Periodic Table.
- Both players have to use Ping tool to place portals with help from GLaDOS, then take the Portal Gun.
- Both players have to place portals to reach higher ledge.
- Blue player has to stand on a button to make Orange able to proceed.
- Orange has to stand on a button to make Blue able to proceed.
- Orange has to use his/her portals to make Blue able to proceed.
- Both players have to use cubes to open a passage for the other player.
- Blue has to activate a box dropper, and Orange has to ctach the cube.
- Orange has to pass the cube to Blue, and proceed to the button.
- Blue has to pass the cube back to Orange, who has to place the cube on button.
- Orange has to stand on a button, which will make Blue able to shoot portals, that will make Orange able to press a button that will activate platforms leading to exit.