| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.44/5 | 3.43/5 |
| Vol 2 | 2.39/5 | 3.51/5 |
| Vol 3 | 2.28/5 | 3.58/5 |
| Vol 4 | 2.08/5 | 3.36/5 |
| Vol 5 | 2.40/5 | 3.43/5 |
| Vol 6 | 2.23/5 | 3.31/5 |
| Vol 7 | 2.29/5 | 3.44/5 |
| Vol 8 | 2.26/5 | 3.53/5 |
| Vol 9 | 2.51/5 | 3.74/5 |
| Vol 10 | 2.61/5 | 3.67/5 |
| Vol 11 | 2.48/5 | 3.71/5 |
| Vol 12 | 2.70/5 | 3.93/5 |
| Vol 13 | 2.71/5 | 3.71/5 |
| Vol 14 | 2.40/5 | 3.65/5 |
| Vol 15 | 2.23/5 | 3.43/5 |
| Overall | 2.40/5 | 3.93/5 |