| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.82/5 | 3.73/5 |
| Vol 2 | 2.78/5 | 3.73/5 |
| Vol 3 | 2.80/5 | 3.73/5 |
| Vol 4 | 2.68/5 | 3.77/5 |
| Vol 5 | 2.61/5 | 3.90/5 |
| Vol 6 | 2.66/5 | 3.70/5 |
| Vol 7 | 2.63/5 | 3.64/5 |
| Vol 8 | 2.50/5 | 3.60/5 |
| Vol 9 | 2.88/5 | 3.91/5 |
| Vol 10 | 2.39/5 | 3.63/5 |
| Vol 11 | 2.70/5 | 3.75/5 |
| Vol 12 | 2.69/5 | 3.76/5 |
| Vol 13 | 2.41/5 | 3.49/5 |
| Vol 14 | 2.65/5 | 3.80/5 |
| Overall | 2.66/5 | 3.91/5 |