app/controllers/triumph/achievements_controller.rb
def show
      @achievement = Achievement.find(params[:id])
      @conditions = @achievement.achievement_conditions

      respond_to do |format|
        format.html # show.html.erb
        format.xml  { render :xml => @achievement }
      end
    end
def show
      @achievement = Achievement.find(params[:id])
      @conditions = @achievement.achievement_conditions

      respond_to do |format|
        format.html # show.html.erb
        format.xml  { render :xml => @achievement }
      end
    end
GET /achievements/1
 GET /achievements/1.xml