| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.43/5 | 4.17/5 |
| Vol 2 | 2.59/5 | 4.17/5 |
| Vol 3 | 2.22/5 | 4.03/5 |
| Vol 4 | 2.82/5 | 4.47/5 |
| Vol 5 | 2.32/5 | 4.12/5 |
| Vol 6 | 2.37/5 | 4.29/5 |
| Vol 7 | 2.15/5 | 4.09/5 |
| Vol 8 | 2.13/5 | 4.12/5 |
| Vol 9 | 2.26/5 | 3.80/5 |
| Vol 10 | 2.31/5 | 4.23/5 |
| Vol 11 | 2.07/5 | 3.83/5 |
| Vol 12 | 2.43/5 | 4.23/5 |
| Vol 13 | 2.26/5 | 4.06/5 |
| Vol 14 | 2.25/5 | 3.75/5 |
| Vol 15 | 2.36/5 | 4.32/5 |
| Vol 16 | 2.46/5 | 4.30/5 |
| Vol 17 | 2.23/5 | 4.36/5 |
| Vol 18 | 2.43/5 | 4.17/5 |
| Vol 19 | 2.20/5 | 4.09/5 |
| Overall | 2.33/5 | 4.47/5 |