| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.26/5 | 4.26/5 |
| Vol 2 | 3.16/5 | 4.19/5 |
| Vol 3 | 3.10/5 | 4.10/5 |
| Vol 4 | 3.32/5 | 4.34/5 |
| Vol 5 | 3.09/5 | 4.16/5 |
| Vol 6 | 3.71/5 | 4.53/5 |
| Vol 7 | 3.37/5 | 4.33/5 |
| Vol 8 | 3.51/5 | 4.46/5 |
| Vol 9 | 3.09/5 | 4.13/5 |
| Vol 10 | 3.38/5 | 4.32/5 |
| Vol 11 | 3.24/5 | 4.16/5 |
| Vol 12 | 3.41/5 | 4.33/5 |
| Vol 13 | 3.06/5 | 4.09/5 |
| Overall | 3.28/5 | 4.53/5 |