| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.00/5 | 3.91/5 |
| Vol 2 | 3.25/5 | 4.11/5 |
| Vol 3 | 3.38/5 | 4.26/5 |
| Vol 4 | 3.47/5 | 4.31/5 |
| Vol 5 | 3.43/5 | 4.29/5 |
| Vol 6 | 3.32/5 | 4.21/5 |
| Vol 7 | 3.32/5 | 4.24/5 |
| Vol 8 | 3.35/5 | 4.26/5 |
| Vol 9 | 3.31/5 | 4.25/5 |
| Vol 10 | 3.27/5 | 4.21/5 |
| Vol 11 | 3.18/5 | 4.14/5 |
| Vol 12 | 3.35/5 | 4.26/5 |
| Overall | 3.30/5 | 4.31/5 |