| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.97/5 | 4.59/5 |
| Vol 2 | 4.07/5 | 4.63/5 |
| Vol 3 | 4.18/5 | 4.67/5 |
| Vol 4 | 4.02/5 | 4.61/5 |
| Vol 5 | 4.04/5 | 4.62/5 |
| Vol 6 | 4.02/5 | 4.61/5 |
| Vol 7 | 4.02/5 | 4.61/5 |
| Vol 8 | 4.15/5 | 4.66/5 |
| Vol 9 | 4.10/5 | 4.64/5 |
| Vol 10 | 4.12/5 | 4.65/5 |
| Vol 11 | 4.06/5 | 4.63/5 |
| Vol 12 | 4.16/5 | 4.66/5 |
| Overall | 4.08/5 | 4.67/5 |