| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.38/5 | 3.74/5 |
| Vol 2 | 2.74/5 | 4.28/5 |
| Vol 3 | 2.34/5 | 3.86/5 |
| Vol 4 | 2.41/5 | 3.67/5 |
| Vol 5 | 2.39/5 | 3.64/5 |
| Vol 6 | 2.35/5 | 3.61/5 |
| Vol 7 | 2.38/5 | 3.96/5 |
| Vol 8 | 2.35/5 | 4.19/5 |
| Vol 9 | 2.08/5 | 3.88/5 |
| Vol 10 | 2.31/5 | 3.36/5 |
| Vol 11 | 2.87/5 | 4.54/5 |
| Overall | 2.44/5 | 4.54/5 |