C1- CAE (Cambridge Advanced Exam) Vocabulary of Achievement/Challenges

What are the meanings of the phrases "committed to," "intent on," "focused (on)," and "set on"?

What are the meanings of the phrases Anxious (about), Apprehensive (about), On edge (about), Tense (about)?

What are the meanings of the phrases Thrilled (about), Overjoyed, Delighted (about)
In good spirits, 


A sudden and unexpected achievement of fame or success

Achievements that are widely recognized over time

A difficult and intimidating task that requires significant effort

A challenge that everyone can easily overcome