| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.58/5 | 4.33/5 |
| Vol 2 | 2.70/5 | 4.36/5 |
| Vol 3 | 3.26/5 | 4.40/5 |
| Vol 4 | 3.15/5 | 4.48/5 |
| Vol 5 | 3.26/5 | 4.48/5 |
| Vol 6 | 3.32/5 | 4.52/5 |
| Vol 7 | 3.13/5 | 4.39/5 |
| Vol 8 | 2.68/5 | 4.25/5 |
| Vol 9 | 2.94/5 | 4.36/5 |
| Vol 10 | 2.86/5 | 4.32/5 |
| Vol 11 | 3.20/5 | 4.45/5 |
| Vol 12 | 3.00/5 | 4.45/5 |
| Vol 13 | 2.83/5 | 4.30/5 |
| Vol 14 | 2.84/5 | 4.21/5 |
| Vol 15 | 2.85/5 | 4.32/5 |
| Vol 16 | 4.06/5 | 4.62/5 |
| Vol 17 | 3.15/5 | 4.53/5 |
| Vol 18 | 3.82/5 | 4.58/5 |
| Vol 19 | 3.21/5 | 4.50/5 |
| Vol 20 | 3.83/5 | 4.58/5 |
| Vol 21 | 3.30/5 | 4.51/5 |
| Vol 22 | 3.16/5 | 4.49/5 |
| Overall | 3.14/5 | 4.62/5 |