| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.48/5 | 4.64/5 |
| Vol 2 | 2.19/5 | 4.47/5 |
| Vol 3 | 2.32/5 | 4.37/5 |
| Vol 4 | 1.95/5 | 3.11/5 |
| Vol 5 | 2.25/5 | 4.00/5 |
| Vol 6 | 2.07/5 | 4.08/5 |
| Vol 7 | 2.67/5 | 4.52/5 |
| Vol 8 | 2.20/5 | 4.44/5 |
| Vol 9 | 2.74/5 | 4.63/5 |
| Vol 10 | 2.62/5 | 4.61/5 |
| Vol 11 | 2.15/5 | 4.33/5 |
| Vol 12 | 2.17/5 | 4.46/5 |
| Vol 13 | 2.65/5 | 4.68/5 |
| Vol 14 | 2.65/5 | 4.61/5 |
| Vol 15 | 2.02/5 | 3.45/5 |
| Overall | 2.35/5 | 4.68/5 |