nicer.rb

class Engine
  include Achievements::AchievementsEngine

  achievements do
    :context1 do 
      achieve {:name => :one_time, :threshold => 1}
    end

    :context2 do
      achieve {:name => :one_time, :threshold => 1}
      achieve {:name => :three_times, :threshold => 3}
    end

    :context3 do
      achieve {:name => :multiple_levels, :threshold => [1,5,10]}
    end
  end
 end