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Nick quasi senza testa Jun 25 @ 12:34pm
Achievement bug
Well, I was completing all the achievement, when i noticed that i haven't Lab Rat althought i have finished the game. Precisely, in game, at the option "achievement" i have it, but on the steam list of the achievements i haven't. So, I can't receive it by repeating the level of the double portal gun. How can i fix it?
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mosertron Jun 25 @ 12:40pm 
No clue. I've never liked completing achievements in games because often the requirement for completing the achievement doesn't work or you have to do it multiple times. Achievements and Trophies has always just been glitchy in my experience.
Jack Noir Jun 26 @ 5:42pm 
I have this same bug. I finish all the advanced test chambers but i don't get the fruit cake achieviment. (Finish 4 advanced). And i tried to repeat the tests, but won't work.
Calmly Frenetic Jun 26 @ 8:59pm 
There is a fix that works for some missing achievements (confirmed for advanced chambers and challenges; not sure about others).

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Rename or delete the file ...\steam\steamapps\common\portal\portal\gamestate.txt

Then start Portal, and replay the part relevant to the achievement:
"Cake" achievements - complete ONE advanced chamber.
"Science" achievements - complete ONE challenge (doesn't need to be gold medal).
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It may also work for story related achievements such as Lab Rat.
Please try and let us know either way.
FERTRY Jun 27 @ 8:20am 
You were connected to the internet when you completed the game?? If you were playing offline or the internet shout down when complete the game you dont get the achivement; in theory you cant get any achivement of any game if you do offline. (Just asking, if you were playing it online I dont really know how to solve that).
Nick quasi senza testa Jun 27 @ 11:38am 
Fixed. Thanks, Calmly ^^
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Date Posted: Jun 25 @ 12:34pm
Posts: 5