In the game, you can get the description of an achievement, if you set your display of achievements to the new format (aka 2), and the following commands are useful for finding the correct text:
*<code>#!uset achievementDisplay 2</code> – New style, with description and requirement
*<code>#!achievements</code> – List the acquired achievements for current user
*<code>#!achievement <achievement></code> – Display text related to the specific achievements, including requirements if <code>achievementDisplay</code> is 2.