| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.71/5 | 4.50/5 |
| Vol 2 | 3.69/5 | 4.52/5 |
| Vol 3 | 3.73/5 | 4.51/5 |
| Vol 4 | 3.81/5 | 4.54/5 |
| Vol 5 | 3.56/5 | 4.44/5 |
| Vol 6 | 3.57/5 | 4.48/5 |
| Vol 7 | 3.71/5 | 4.51/5 |
| Vol 8 | 3.71/5 | 4.51/5 |
| Vol 9 | 3.75/5 | 4.52/5 |
| Vol 10 | 3.94/5 | 4.58/5 |
| Vol 11 | 3.80/5 | 4.55/5 |
| Vol 12 | 3.82/5 | 4.54/5 |
| Overall | 3.73/5 | 4.58/5 |