| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.08/5 | 4.04/5 |
| Vol 2 | 3.51/5 | 4.39/5 |
| Vol 3 | 3.22/5 | 4.20/5 |
| Vol 4 | 3.06/5 | 3.98/5 |
| Vol 5 | 3.16/5 | 4.07/5 |
| Vol 6 | 2.86/5 | 4.10/5 |
| Vol 7 | 3.13/5 | 4.09/5 |
| Vol 8 | 3.36/5 | 4.35/5 |
| Vol 9 | 3.06/5 | 3.97/5 |
| Vol 10 | 2.96/5 | 4.19/5 |
| Vol 11 | 3.17/5 | 4.02/5 |
| Vol 12 | 3.20/5 | 4.27/5 |
| Vol 13 | 3.25/5 | 4.32/5 |
| Vol 14 | 3.41/5 | 4.35/5 |
| Vol 15 | 3.27/5 | 4.11/5 |
| Vol 16 | 3.35/5 | 4.32/5 |
| Vol 17 | 3.19/5 | 4.11/5 |
| Overall | 3.19/5 | 4.39/5 |