| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.46/5 | 4.18/5 |
| Vol 2 | 2.45/5 | 4.12/5 |
| Vol 3 | 2.47/5 | 4.27/5 |
| Vol 4 | 2.56/5 | 4.35/5 |
| Vol 5 | 2.10/5 | 3.82/5 |
| Vol 6 | 2.42/5 | 4.14/5 |
| Vol 7 | 2.71/5 | 4.34/5 |
| Vol 8 | 3.20/5 | 4.59/5 |
| Vol 9 | 1.97/5 | 3.66/5 |
| Vol 10 | 2.98/5 | 4.51/5 |
| Vol 11 | 3.10/5 | 4.60/5 |
| Vol 12 | 2.62/5 | 4.30/5 |
| Vol 13 | 3.29/5 | 4.61/5 |
| Overall | 2.64/5 | 4.61/5 |