| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.58/5 | 4.36/5 |
| Vol 2 | 3.55/5 | 4.36/5 |
| Vol 3 | 3.64/5 | 4.37/5 |
| Vol 4 | 3.82/5 | 4.43/5 |
| Vol 5 | 3.65/5 | 4.38/5 |
| Vol 6 | 3.77/5 | 4.41/5 |
| Vol 7 | 3.91/5 | 4.46/5 |
| Vol 8 | 3.94/5 | 4.47/5 |
| Vol 9 | 4.01/5 | 4.50/5 |
| Vol 10 | 3.95/5 | 4.48/5 |
| Vol 11 | 3.98/5 | 4.49/5 |
| Vol 12 | 3.91/5 | 4.46/5 |
| Vol 13 | 3.97/5 | 4.48/5 |
| Vol 14 | 3.93/5 | 4.47/5 |
| Overall | 3.85/5 | 4.44/5 |