How do levels work in overwatch?

Related questions

1. What is a good Scrabble score?
2. How does ELO work CSGO?
3. What is Hero rank in Overbuff?
4. Can I get FIDE rating online?
5. What is a good Scrabble Elo rating?
6. What does a gold portrait mean in overwatch?
7. Is roadhog a tank?
8. What is a good chess rating?
9. What does quick rank mean in Overbuff?
10. How does CS GO rank work?

Tags

1. #changes
2. #their
3. #overwatch
4. #stars
5. #again
6. #receive
7. #after
8. #progression
9. #level
10. #silver
11. #portrait
12. #players
13. #promotion
14. #borders
15. #starts
16. #which
17. #system