achievement
/əˈtʃiːvmənt अˈचीव़्मन्ट्/ noun [C, U] something that you have done successfully, especially through hard work or skill सफलतापूर्वक संपादित कार्य, विशेषतः परिश्रम और कौशल द्वारा प्राप्त उपलब्ध
He enjoys climbing mountains because it gives him a sense of achievement.