| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.61/5 | 3.64/5 |
| Vol 2 | 2.65/5 | 3.64/5 |
| Vol 3 | 2.73/5 | 3.78/5 |
| Vol 4 | 2.55/5 | 3.83/5 |
| Vol 5 | 2.72/5 | 3.77/5 |
| Vol 6 | 2.73/5 | 3.79/5 |
| Vol 7 | 2.64/5 | 3.77/5 |
| Vol 8 | 2.58/5 | 3.77/5 |
| Vol 9 | 2.64/5 | 3.90/5 |
| Vol 10 | 2.76/5 | 3.81/5 |
| Vol 11 | 2.55/5 | 3.68/5 |
| Vol 12 | 2.74/5 | 3.89/5 |
| Vol 13 | 2.72/5 | 3.90/5 |
| Vol 14 | 2.65/5 | 3.85/5 |
| Vol 15 | 2.62/5 | 3.82/5 |
| Vol 16 | 2.65/5 | 3.91/5 |
| Vol 17 | 2.96/5 | 4.13/5 |
| Vol 18 | 2.60/5 | 3.87/5 |
| Overall | 2.68/5 | 4.13/5 |