| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.78/5 | 3.98/5 |
| Vol 2 | 2.76/5 | 3.78/5 |
| Vol 3 | 2.57/5 | 3.70/5 |
| Vol 4 | 2.66/5 | 3.81/5 |
| Vol 5 | 2.80/5 | 3.85/5 |
| Vol 6 | 2.68/5 | 3.93/5 |
| Vol 7 | 2.73/5 | 3.85/5 |
| Vol 8 | 2.78/5 | 3.97/5 |
| Vol 9 | 2.84/5 | 3.82/5 |
| Vol 10 | 2.70/5 | 3.98/5 |
| Vol 11 | 2.94/5 | 3.98/5 |
| Vol 12 | 2.94/5 | 3.97/5 |
| Overall | 2.76/5 | 3.98/5 |