| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.08/5 | 4.44/5 |
| Vol 2 | 2.09/5 | 4.56/5 |
| Vol 3 | 2.21/5 | 4.38/5 |
| Vol 4 | 2.67/5 | 4.47/5 |
| Vol 5 | 2.28/5 | 4.55/5 |
| Vol 6 | 2.75/5 | 4.68/5 |
| Vol 7 | 2.14/5 | 4.12/5 |
| Vol 8 | 2.15/5 | 4.50/5 |
| Vol 9 | 2.22/5 | 4.50/5 |
| Vol 10 | 2.05/5 | 4.40/5 |
| Vol 11 | 2.07/5 | 4.15/5 |
| Overall | 2.25/5 | 4.68/5 |