| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.14/5 | 4.13/5 |
| Vol 2 | 3.32/5 | 4.20/5 |
| Vol 3 | 3.05/5 | 4.07/5 |
| Vol 4 | 3.34/5 | 4.18/5 |
| Vol 5 | 3.05/5 | 4.02/5 |
| Vol 6 | 3.04/5 | 4.17/5 |
| Vol 7 | 3.16/5 | 4.20/5 |
| Vol 8 | 3.07/5 | 3.98/5 |
| Vol 9 | 3.08/5 | 3.89/5 |
| Vol 10 | 3.01/5 | 4.06/5 |
| Vol 11 | 2.84/5 | 3.87/5 |
| Vol 12 | 2.98/5 | 3.93/5 |
| Vol 13 | 2.86/5 | 4.12/5 |
| Overall | 3.08/5 | 4.20/5 |