| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.63/5 | 4.71/5 |
| Vol 2 | 3.10/5 | 4.58/5 |
| Vol 3 | 3.48/5 | 4.66/5 |
| Vol 4 | 3.84/5 | 4.73/5 |
| Vol 5 | 2.94/5 | 4.54/5 |
| Vol 6 | 2.85/5 | 4.45/5 |
| Vol 7 | 3.11/5 | 4.60/5 |
| Vol 8 | 3.16/5 | 4.63/5 |
| Vol 9 | 3.03/5 | 4.51/5 |
| Vol 10 | 3.32/5 | 4.67/5 |
| Vol 11 | 3.08/5 | 4.60/5 |
| Overall | 3.26/5 | 4.73/5 |