| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.53/5 | 4.19/5 |
| Vol 2 | 2.53/5 | 4.32/5 |
| Vol 3 | 3.26/5 | 4.42/5 |
| Vol 4 | 2.88/5 | 4.39/5 |
| Vol 5 | 3.38/5 | 4.47/5 |
| Vol 6 | 3.62/5 | 4.57/5 |
| Vol 7 | 3.85/5 | 4.59/5 |
| Vol 8 | 3.88/5 | 4.58/5 |
| Vol 9 | 3.65/5 | 4.55/5 |
| Vol 10 | 2.94/5 | 4.47/5 |
| Vol 11 | 3.33/5 | 4.51/5 |
| Vol 12 | 3.67/5 | 4.54/5 |
| Vol 13 | 3.50/5 | 4.49/5 |
| Vol 14 | 3.90/5 | 4.59/5 |
| Vol 15 | 4.00/5 | 4.60/5 |
| Vol 16 | 4.08/5 | 4.63/5 |
| Vol 17 | 4.04/5 | 4.62/5 |
| Overall | 3.47/5 | 4.63/5 |