| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.40/5 | 4.06/5 |
| Vol 2 | 2.50/5 | 4.06/5 |
| Vol 3 | 2.65/5 | 4.27/5 |
| Vol 4 | 2.74/5 | 4.39/5 |
| Vol 5 | 2.73/5 | 4.25/5 |
| Vol 6 | 2.77/5 | 4.30/5 |
| Vol 7 | 2.74/5 | 4.29/5 |
| Vol 8 | 2.60/5 | 4.21/5 |
| Vol 9 | 2.65/5 | 4.25/5 |
| Vol 10 | 2.80/5 | 4.38/5 |
| Vol 11 | 2.51/5 | 4.32/5 |
| Vol 12 | 2.78/5 | 4.29/5 |
| Vol 13 | 2.80/5 | 4.19/5 |
| Vol 14 | 2.77/5 | 4.39/5 |
| Vol 15 | 2.58/5 | 4.12/5 |
| Vol 16 | 2.72/5 | 4.36/5 |
| Vol 17 | 2.82/5 | 4.33/5 |
| Overall | 2.68/5 | 4.39/5 |