| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.39/5 | 4.17/5 |
| Vol 2 | 3.25/5 | 3.97/5 |
| Vol 3 | 3.33/5 | 4.07/5 |
| Vol 4 | 3.43/5 | 4.23/5 |
| Vol 5 | 3.44/5 | 4.30/5 |
| Vol 6 | 3.20/5 | 4.11/5 |
| Vol 7 | 3.11/5 | 3.88/5 |
| Vol 8 | 3.38/5 | 4.26/5 |
| Vol 9 | 3.25/5 | 3.99/5 |
| Vol 10 | 3.41/5 | 4.27/5 |
| Vol 11 | 3.39/5 | 4.33/5 |
| Vol 12 | 3.29/5 | 4.08/5 |
| Overall | 3.32/5 | 4.33/5 |