| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.03/5 | 4.21/5 |
| Vol 2 | 3.34/5 | 4.30/5 |
| Vol 3 | 3.33/5 | 4.21/5 |
| Vol 4 | 3.22/5 | 4.34/5 |
| Vol 5 | 3.31/5 | 4.16/5 |
| Vol 6 | 3.47/5 | 4.24/5 |
| Vol 7 | 3.26/5 | 4.40/5 |
| Vol 8 | 3.38/5 | 4.42/5 |
| Vol 9 | 3.53/5 | 4.39/5 |
| Vol 10 | 3.49/5 | 4.30/5 |
| Vol 11 | 3.25/5 | 4.36/5 |
| Vol 12 | 2.65/5 | 4.00/5 |
| Vol 13 | 2.80/5 | 4.21/5 |
| Vol 14 | 2.81/5 | 4.26/5 |
| Vol 15 | 3.02/5 | 4.21/5 |
| Overall | 3.19/5 | 4.42/5 |