| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 1.78/5 | 2.94/5 |
| Vol 2 | 1.85/5 | 3.06/5 |
| Vol 3 | 1.69/5 | 2.90/5 |
| Vol 4 | 1.92/5 | 3.33/5 |
| Vol 5 | 1.91/5 | 3.05/5 |
| Vol 6 | 1.76/5 | 3.06/5 |
| Vol 7 | 1.89/5 | 3.56/5 |
| Vol 8 | 1.70/5 | 2.90/5 |
| Vol 9 | 1.92/5 | 4.34/5 |
| Vol 10 | 1.54/5 | 2.82/5 |
| Vol 11 | 1.80/5 | 4.23/5 |
| Vol 12 | 1.58/5 | 3.20/5 |
| Vol 13 | 1.87/5 | 4.29/5 |
| Vol 14 | 1.53/5 | 3.02/5 |
| Vol 15 | 1.48/5 | 2.78/5 |
| Overall | 1.75/5 | 4.34/5 |