Achievement is the kind of word that provokes an assortment of potential definitions.
Some might argue that success alone defines achievement, even if that success involves unimportant problems. Others might suggest that success is trivial unless it occurs on important problems, even if those problems are easy to solve. Still others might maintain that achievement is a word best reserved for success on important, difficult problems that the private and nonprofit sectors simply cannot solve on their own. The term becomes even more difficult to define when it is linked to government. Some would argue that government should only engage in endeavors that show the promise of impact, others that government should reserve its energies only for important goals, and still others that government should concentrate its effort on important, difficult problems that no other sector can tackle.