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Hello guys,

Has anyone completed all the achievements? I am having the greatest amount of trouble getting this last secret achievement without having an idea what it is. It is not even a very rare achievement either (Uncommon 11.5% players have gotten it). I thought it was Poison Control: cure poison 5 times in a mission, or All Aboard: Complete Confounding Light with more than 3 turns left on the timer, but neither are it. I did the cure thing many times with 5 med packs all used up on different soldiers, and I just finished the Confounding Light mission with 4 turns left and I still don't have achievements. Now all I have left is the No Sweat: Complete Deluge without activating more than 2 valves, but this one is not even listed on Steam.

Thanks in advance!
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Did you consult the achievements list like the one at xcom.fandom.com/wiki/Achievements_(XCOM:_Enemy_Unknown)?
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Markoff: Did you consult the achievements list like the one at xcom.fandom.com/wiki/Achievements_(XCOM:_Enemy_Unknown)?
I did that especially. I was sure that it was All Aboard, but it didn't happen.