| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.30/5 | 4.52/5 |
| Vol 2 | 2.41/5 | 4.57/5 |
| Vol 3 | 2.16/5 | 3.71/5 |
| Vol 4 | 2.46/5 | 4.55/5 |
| Vol 5 | 2.27/5 | 4.57/5 |
| Vol 6 | 2.23/5 | 4.65/5 |
| Vol 7 | 2.30/5 | 4.61/5 |
| Vol 8 | 2.59/5 | 4.59/5 |
| Vol 9 | 2.76/5 | 4.68/5 |
| Vol 10 | 2.71/5 | 4.71/5 |
| Vol 11 | 2.19/5 | 4.55/5 |
| Vol 12 | 2.72/5 | 4.59/5 |
| Vol 13 | 2.64/5 | 4.67/5 |
| Vol 14 | 2.69/5 | 4.65/5 |
| Vol 15 | 2.94/5 | 4.73/5 |
| Overall | 2.51/5 | 4.73/5 |