| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.31/5 | 4.11/5 |
| Vol 2 | 3.08/5 | 4.01/5 |
| Vol 3 | 3.07/5 | 3.92/5 |
| Vol 4 | 3.27/5 | 4.17/5 |
| Vol 5 | 3.36/5 | 4.21/5 |
| Vol 6 | 3.49/5 | 4.43/5 |
| Vol 7 | 3.17/5 | 4.01/5 |
| Vol 8 | 3.49/5 | 4.36/5 |
| Vol 9 | 3.41/5 | 4.25/5 |
| Vol 10 | 3.49/5 | 4.38/5 |
| Vol 11 | 3.26/5 | 4.32/5 |
| Vol 12 | 3.59/5 | 4.41/5 |
| Vol 13 | 3.23/5 | 4.09/5 |
| Vol 14 | 3.33/5 | 4.22/5 |
| Vol 15 | 3.33/5 | 4.27/5 |
| Vol 16 | 3.44/5 | 4.34/5 |
| Overall | 3.33/5 | 4.43/5 |