| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.71/5 | 3.62/5 |
| Vol 2 | 2.69/5 | 3.68/5 |
| Vol 3 | 2.63/5 | 3.73/5 |
| Vol 4 | 2.65/5 | 3.71/5 |
| Vol 5 | 2.66/5 | 3.61/5 |
| Vol 6 | 2.65/5 | 3.57/5 |
| Vol 7 | 2.51/5 | 3.01/5 |
| Vol 8 | 2.91/5 | 3.81/5 |
| Vol 9 | 2.62/5 | 3.61/5 |
| Vol 10 | 2.73/5 | 3.66/5 |
| Vol 11 | 2.70/5 | 3.63/5 |
| Vol 12 | 2.82/5 | 3.81/5 |
| Vol 13 | 2.83/5 | 3.78/5 |
| Vol 14 | 2.81/5 | 3.78/5 |
| Vol 15 | 2.76/5 | 3.78/5 |
| Overall | 2.71/5 | 3.81/5 |