| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 1.90/5 | 2.95/5 |
| Vol 2 | 2.09/5 | 2.93/5 |
| Vol 3 | 2.00/5 | 3.00/5 |
| Vol 4 | 2.17/5 | 4.00/5 |
| Vol 5 | 2.29/5 | 3.76/5 |
| Vol 6 | 2.36/5 | 3.80/5 |
| Vol 7 | 2.19/5 | 3.65/5 |
| Vol 8 | 2.13/5 | 3.27/5 |
| Vol 9 | 2.23/5 | 3.57/5 |
| Vol 10 | 2.33/5 | 3.74/5 |
| Vol 11 | 2.36/5 | 3.81/5 |
| Vol 12 | 2.10/5 | 3.39/5 |
| Vol 13 | 2.23/5 | 3.88/5 |
| Vol 14 | 2.31/5 | 3.75/5 |
| Vol 15 | 2.16/5 | 3.72/5 |
| Vol 16 | 2.17/5 | 3.35/5 |
| Overall | 2.19/5 | 4.00/5 |