| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.65/5 | 4.46/5 |
| Vol 2 | 2.41/5 | 4.17/5 |
| Vol 3 | 2.73/5 | 4.42/5 |
| Vol 4 | 2.89/5 | 4.43/5 |
| Vol 5 | 2.82/5 | 4.30/5 |
| Vol 6 | 2.84/5 | 4.45/5 |
| Vol 7 | 2.56/5 | 4.12/5 |
| Vol 8 | 2.64/5 | 4.30/5 |
| Vol 9 | 2.97/5 | 4.40/5 |
| Vol 10 | 3.11/5 | 4.31/5 |
| Vol 11 | 3.15/5 | 4.43/5 |
| Vol 12 | 2.92/5 | 4.51/5 |
| Vol 13 | 2.91/5 | 4.49/5 |
| Vol 14 | 2.63/5 | 4.25/5 |
| Vol 15 | 2.98/5 | 4.21/5 |
| Vol 16 | 2.84/5 | 4.35/5 |
| Overall | 2.82/5 | 4.51/5 |