| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.26/5 | 4.10/5 |
| Vol 2 | 3.13/5 | 3.98/5 |
| Vol 3 | 3.17/5 | 3.97/5 |
| Vol 4 | 3.17/5 | 4.01/5 |
| Vol 5 | 3.34/5 | 4.05/5 |
| Vol 6 | 3.02/5 | 3.96/5 |
| Vol 7 | 3.03/5 | 3.86/5 |
| Vol 8 | 3.25/5 | 3.94/5 |
| Vol 9 | 2.95/5 | 3.93/5 |
| Vol 10 | 3.44/5 | 4.29/5 |
| Vol 11 | 3.39/5 | 4.07/5 |
| Vol 12 | 3.42/5 | 4.23/5 |
| Overall | 3.21/5 | 4.29/5 |