| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.71/5 | 4.21/5 |
| Vol 2 | 2.74/5 | 4.14/5 |
| Vol 3 | 2.74/5 | 3.97/5 |
| Vol 4 | 2.78/5 | 4.30/5 |
| Vol 5 | 2.79/5 | 4.32/5 |
| Vol 6 | 3.00/5 | 4.25/5 |
| Vol 7 | 3.13/5 | 4.38/5 |
| Vol 8 | 2.98/5 | 4.19/5 |
| Vol 9 | 2.90/5 | 4.18/5 |
| Vol 10 | 2.88/5 | 4.30/5 |
| Vol 11 | 3.11/5 | 4.29/5 |
| Vol 12 | 2.96/5 | 4.27/5 |
| Vol 13 | 3.11/5 | 4.29/5 |
| Vol 14 | 2.96/5 | 4.21/5 |
| Vol 15 | 2.79/5 | 4.19/5 |
| Vol 16 | 2.98/5 | 4.25/5 |
| Overall | 2.91/5 | 4.38/5 |