| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.42/5 | 4.15/5 |
| Vol 2 | 3.58/5 | 4.33/5 |
| Vol 3 | 3.39/5 | 4.10/5 |
| Vol 4 | 3.29/5 | 4.14/5 |
| Vol 5 | 3.30/5 | 4.16/5 |
| Vol 6 | 3.28/5 | 4.12/5 |
| Vol 7 | 3.37/5 | 4.28/5 |
| Vol 8 | 3.35/5 | 4.30/5 |
| Vol 9 | 3.52/5 | 4.35/5 |
| Vol 10 | 3.49/5 | 4.36/5 |
| Vol 11 | 3.38/5 | 4.22/5 |
| Vol 12 | 3.23/5 | 4.20/5 |
| Vol 13 | 3.72/5 | 4.44/5 |
| Vol 14 | 3.45/5 | 4.27/5 |
| Overall | 3.39/5 | 4.44/5 |