| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.29/5 | 4.07/5 |
| Vol 2 | 3.30/5 | 4.11/5 |
| Vol 3 | 3.44/5 | 4.34/5 |
| Vol 4 | 3.47/5 | 4.29/5 |
| Vol 5 | 3.53/5 | 4.35/5 |
| Vol 6 | 3.47/5 | 4.38/5 |
| Vol 7 | 3.45/5 | 4.39/5 |
| Vol 8 | 3.49/5 | 4.36/5 |
| Vol 9 | 3.46/5 | 4.32/5 |
| Vol 10 | 3.50/5 | 4.29/5 |
| Vol 11 | 3.37/5 | 4.26/5 |
| Vol 12 | 3.39/5 | 4.23/5 |
| Vol 13 | 3.33/5 | 4.21/5 |
| Vol 14 | 3.14/5 | 4.09/5 |
| Overall | 3.40/5 | 4.39/5 |