I already tried that, that didn’t work either.
In every case, if I deactivate them and activate them again these achievements work:
Achievement_0_Id="NEW_ACHIEVEMENT_1_0"
Achievement_2_Id="NEW_ACHIEVEMENT_1_2"
Achievement_3_Id="NEW_ACHIEVEMENT_1_3"
Achievement_4_Id="NEW_ACHIEVEMENT_1_4"
Achievement_5_Id="NEW_ACHIEVEMENT_1_5"
Achievement_6_Id="NEW_ACHIEVEMENT_1_6"
Achievement_7_Id="NEW_ACHIEVEMENT_1_7"
Achievement_8_Id="NEW_ACHIEVEMENT_1_8"
Achievement_9_Id="NEW_ACHIEVEMENT_1_9"
While these don’t:
Achievement_1_Id="NEW_ACHIEVEMENT_1_1"
Achievement_11_Id="NEW_ACHIEVEMENT_1_11"
Achievement_12_Id="NEW_ACHIEVEMENT_1_12"
Achievement_13_Id="NEW_ACHIEVEMENT_1_13"
Achievement_14_Id="NEW_ACHIEVEMENT_1_14"
Achievement_15_Id="NEW_ACHIEVEMENT_1_15"
I did not forget to publish the changes to Steam.
Here is what happens when I activate them:
https://drive.google.com/file/d/0B2UlKqRHB4gHam90WENCUHZxaTg/view?usp=sharing
As you can see these activate based on the text in the icon:
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