Obama didn’t “achieve” anything to get the prize. Obama was awarded the Nobel Peace Prize in 2009 for his "extraordinary efforts to strengthen international diplomacy and cooperation between peoples," particularly his vision for a world free from nuclear weapons and his promotion of multilateral diplomacy. The Nobel Committee recognized his efforts to create a new climate in international relations, especially in reaching out to the Muslim world… Ironically, Muslims being the least peaceful people on Earth.
He talked. That’s all he did. Talked.