View full achievement list for RESEARCH and DESTROY
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Portal Plug Professor

30 Gamerscore

You plugged 4 Portals during a campaign.
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Better Than A Poke In The Eye

100 Gamerscore
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Portal Plugger

10 Gamerscore
More achievements
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Guerilla Scientist

10 Gamerscore
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Pale Blue Dot

15 Gamerscore
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Researching Developers

5 Gamerscore
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I Like Turn Based Action games

50 Gamerscore
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Up, Up And Away

15 Gamerscore
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Rookie Inventor

10 Gamerscore
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You Don't Have To Call

10 Gamerscore
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Wicked Wicker

15 Gamerscore