| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.59/5 | 3.58/5 |
| Vol 2 | 2.87/5 | 3.84/5 |
| Vol 3 | 3.06/5 | 3.95/5 |
| Vol 4 | 3.04/5 | 4.14/5 |
| Vol 5 | 2.88/5 | 3.85/5 |
| Vol 6 | 2.46/5 | 3.45/5 |
| Vol 7 | 3.02/5 | 3.74/5 |
| Vol 8 | 3.10/5 | 3.92/5 |
| Vol 9 | 2.42/5 | 3.73/5 |
| Vol 10 | 2.83/5 | 3.97/5 |
| Vol 11 | 2.59/5 | 3.74/5 |
| Vol 12 | 3.07/5 | 3.99/5 |
| Vol 13 | 2.72/5 | 3.62/5 |
| Vol 14 | 2.75/5 | 3.73/5 |
| Vol 15 | 3.05/5 | 4.06/5 |
| Vol 16 | 3.01/5 | 4.06/5 |
| Overall | 2.85/5 | 4.14/5 |