| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.70/5 | 4.45/5 |
| Vol 2 | 2.58/5 | 4.45/5 |
| Vol 3 | 2.37/5 | 4.38/5 |
| Vol 4 | 2.28/5 | 4.32/5 |
| Vol 5 | 2.66/5 | 4.47/5 |
| Vol 6 | 2.04/5 | 4.12/5 |
| Vol 7 | 2.58/5 | 4.43/5 |
| Vol 8 | 2.52/5 | 4.35/5 |
| Vol 9 | 2.95/5 | 4.54/5 |
| Vol 10 | 2.81/5 | 4.53/5 |
| Vol 11 | 2.68/5 | 4.42/5 |
| Vol 12 | 2.26/5 | 4.25/5 |
| Vol 13 | 2.76/5 | 4.52/5 |
| Vol 14 | 2.00/5 | 4.29/5 |
| Vol 15 | 2.45/5 | 4.38/5 |
| Vol 16 | 1.95/5 | 4.25/5 |
| Vol 17 | 2.69/5 | 4.46/5 |
| Vol 18 | 2.58/5 | 4.09/5 |
| Overall | 2.49/5 | 4.54/5 |