| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 1.94/5 | 4.25/5 |
| Vol 2 | 2.03/5 | 4.12/5 |
| Vol 3 | 2.20/5 | 4.29/5 |
| Vol 4 | 1.87/5 | 4.17/5 |
| Vol 5 | 2.11/5 | 4.21/5 |
| Vol 6 | 2.57/5 | 4.33/5 |
| Vol 7 | 2.32/5 | 4.36/5 |
| Vol 8 | 2.67/5 | 4.41/5 |
| Vol 9 | 2.25/5 | 4.25/5 |
| Vol 10 | 2.09/5 | 4.32/5 |
| Vol 11 | 2.00/5 | 4.19/5 |
| Vol 12 | 2.06/5 | 4.12/5 |
| Vol 13 | 2.39/5 | 4.33/5 |
| Vol 14 | 2.36/5 | 4.32/5 |
| Vol 15 | 2.06/5 | 4.19/5 |
| Vol 16 | 1.98/5 | 4.29/5 |
| Vol 17 | 1.82/5 | 4.14/5 |
| Overall | 2.16/5 | 4.41/5 |