| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.91/5 | 4.62/5 |
| Vol 2 | 3.25/5 | 4.62/5 |
| Vol 3 | 3.58/5 | 4.80/5 |
| Vol 4 | 3.27/5 | 4.76/5 |
| Vol 5 | 3.75/5 | 4.79/5 |
| Vol 6 | 3.27/5 | 4.74/5 |
| Vol 7 | 3.19/5 | 4.73/5 |
| Vol 8 | 3.27/5 | 4.75/5 |
| Vol 9 | 3.01/5 | 4.52/5 |
| Vol 10 | 3.45/5 | 4.74/5 |
| Vol 11 | 2.78/5 | 4.63/5 |
| Vol 12 | 3.12/5 | 4.67/5 |
| Vol 13 | 3.10/5 | 4.52/5 |
| Vol 14 | 3.01/5 | 4.67/5 |
| Vol 15 | 3.27/5 | 4.69/5 |
| Vol 16 | 3.39/5 | 4.78/5 |
| Vol 17 | 3.34/5 | 4.79/5 |
| Vol 18 | 3.16/5 | 4.74/5 |
| Vol 19 | 3.32/5 | 4.72/5 |
| Vol 20 | 3.13/5 | 4.75/5 |
| Overall | 3.22/5 | 4.80/5 |