| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.13/5 | 3.63/5 |
| Vol 2 | 3.17/5 | 3.68/5 |
| Vol 3 | 3.24/5 | 3.71/5 |
| Vol 4 | 3.26/5 | 3.67/5 |
| Vol 5 | 3.27/5 | 3.70/5 |
| Vol 6 | 3.25/5 | 3.69/5 |
| Vol 7 | 3.30/5 | 3.68/5 |
| Vol 8 | 3.17/5 | 3.65/5 |
| Vol 9 | 3.26/5 | 3.70/5 |
| Vol 10 | 3.28/5 | 3.72/5 |
| Vol 11 | 3.17/5 | 3.62/5 |
| Vol 12 | 3.23/5 | 3.68/5 |
| Vol 13 | 3.27/5 | 3.68/5 |
| Vol 14 | 3.25/5 | 3.65/5 |
| Vol 15 | 3.13/5 | 3.62/5 |
| Overall | 3.22/5 | 3.72/5 |