| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 1.86/5 | 4.23/5 |
| Vol 2 | 2.35/5 | 4.27/5 |
| Vol 3 | 2.14/5 | 4.30/5 |
| Vol 4 | 2.32/5 | 4.29/5 |
| Vol 5 | 2.18/5 | 4.03/5 |
| Vol 6 | 2.40/5 | 4.30/5 |
| Vol 7 | 1.74/5 | 3.20/5 |
| Vol 8 | 2.09/5 | 3.83/5 |
| Vol 9 | 1.92/5 | 4.00/5 |
| Vol 10 | 1.84/5 | 2.95/5 |
| Vol 11 | 2.17/5 | 4.12/5 |
| Vol 12 | 2.08/5 | 4.39/5 |
| Vol 13 | 2.24/5 | 4.33/5 |
| Vol 14 | 2.07/5 | 4.27/5 |
| Vol 15 | 2.04/5 | 4.33/5 |
| Vol 16 | 2.32/5 | 4.32/5 |
| Vol 17 | 1.98/5 | 4.33/5 |
| Vol 18 | 1.90/5 | 4.25/5 |
| Vol 19 | 2.39/5 | 4.30/5 |
| Overall | 2.11/5 | 4.39/5 |