What is Ascension mode slay the spire?

Related questions

1. What is slay the spire ascension?
2. How do you play battle with cards?
3. How do I get to slay the spire Act 4?
4. Is slay the spire coming to console?
5. Will slay the spire be on mobile?
6. What is a steam card?
7. How do you get the Act 4 slay the spire?

Tags

1. #least
2. #beaten
3. #difficulty
4. #characters
5. #challenge
6. #order
7. #added
8. #across
9. #basically
10. #times
11. #experimental
12. #bosses
13. #unlock
14. #ascension