| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.81/5 | 4.43/5 |
| Vol 2 | 3.71/5 | 4.52/5 |
| Vol 3 | 3.74/5 | 4.53/5 |
| Vol 4 | 3.09/5 | 4.47/5 |
| Vol 5 | 3.94/5 | 4.54/5 |
| Vol 6 | 3.14/5 | 4.49/5 |
| Vol 7 | 3.47/5 | 4.49/5 |
| Vol 8 | 2.84/5 | 4.47/5 |
| Vol 9 | 3.99/5 | 4.56/5 |
| Vol 10 | 3.98/5 | 4.56/5 |
| Vol 11 | 3.98/5 | 4.56/5 |
| Vol 12 | 2.85/5 | 4.45/5 |
| Vol 13 | 3.88/5 | 4.53/5 |
| Vol 14 | 4.04/5 | 4.58/5 |
| Vol 15 | 3.99/5 | 4.56/5 |
| Overall | 3.56/5 | 4.58/5 |