| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.17/5 | 3.94/5 |
| Vol 2 | 3.11/5 | 4.14/5 |
| Vol 3 | 3.00/5 | 4.12/5 |
| Vol 4 | 3.08/5 | 4.04/5 |
| Vol 5 | 3.20/5 | 4.35/5 |
| Vol 6 | 2.99/5 | 4.10/5 |
| Vol 7 | 3.26/5 | 4.35/5 |
| Vol 8 | 3.46/5 | 4.39/5 |
| Vol 9 | 2.90/5 | 4.03/5 |
| Vol 10 | 3.50/5 | 4.42/5 |
| Vol 11 | 3.19/5 | 4.13/5 |
| Vol 12 | 3.40/5 | 4.27/5 |
| Vol 13 | 3.44/5 | 4.39/5 |
| Vol 14 | 3.22/5 | 4.32/5 |
| Overall | 3.21/5 | 4.42/5 |