| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.23/5 | 4.39/5 |
| Vol 2 | 1.94/5 | 4.22/5 |
| Vol 3 | 2.07/5 | 4.12/5 |
| Vol 4 | 1.70/5 | 2.86/5 |
| Vol 5 | 2.00/5 | 3.75/5 |
| Vol 6 | 1.82/5 | 3.83/5 |
| Vol 7 | 2.42/5 | 4.27/5 |
| Vol 8 | 1.95/5 | 4.19/5 |
| Vol 9 | 2.49/5 | 4.38/5 |
| Vol 10 | 2.37/5 | 4.36/5 |
| Vol 11 | 1.90/5 | 4.08/5 |
| Vol 12 | 1.92/5 | 4.21/5 |
| Vol 13 | 2.40/5 | 4.43/5 |
| Vol 14 | 2.40/5 | 4.36/5 |
| Vol 15 | 1.77/5 | 3.20/5 |
| Overall | 2.09/5 | 4.43/5 |