| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.33/5 | 4.27/5 |
| Vol 2 | 3.31/5 | 4.26/5 |
| Vol 3 | 3.37/5 | 4.33/5 |
| Vol 4 | 3.25/5 | 4.20/5 |
| Vol 5 | 3.39/5 | 4.37/5 |
| Vol 6 | 3.28/5 | 4.23/5 |
| Vol 7 | 3.32/5 | 4.19/5 |
| Vol 8 | 3.52/5 | 4.38/5 |
| Vol 9 | 3.04/5 | 4.10/5 |
| Vol 10 | 3.36/5 | 4.31/5 |
| Vol 11 | 3.46/5 | 4.27/5 |
| Vol 12 | 3.45/5 | 4.42/5 |
| Vol 13 | 3.34/5 | 4.16/5 |
| Vol 14 | 3.30/5 | 4.15/5 |
| Overall | 3.34/5 | 4.42/5 |