Are you honest, reliable, ethical? Those are strengths employers seek, as well as employees who have a sense of urgency, they know how important it is to get things done and get them done quickly. Employers like to see an employee with enthusiasm for their job, not someone who walks, talks, moves slow with no personality or ambition.
Some possible work strengths can be:
- Strong and firm leader
- Having good skills of managing
- Creativity
- Having good hold over your skill
- Good in resolving conflicts and problems
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You might list the things that make you a more suitable candidate than anyone else. For example, if your amazing hypothetical skill of mountain climbing shows that you have excellent team leading skills, then you might bring that up with a reason.
When it comes to accomplishments, you will want to show them anything you have done that is superior to anyone else. Examples of this include certificates in activities, like scuba diving/an academic subject/teaching or simply winning certain competitive events.
Essentially, anything that will make you stand out to the interviewer as being a superior candidate for the job.