It has been sometime since I have updated the plugin, and reading through some of the discussion posts I saw a great suggestion to add a "blocks travelled" achievement, which is what this update brings!

Some additional minor changes as well, there is now a new line in the config.yml file for server owners to add a description of each achievement, which will now be displayed when the players use the /ach list command.

Did some small housekeeping in the code as well, just cleaning up some of the script structure for better clarity.

TL;DR: Added blocks traveled achievements and achievement descriptions.