| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.47/5 | 4.44/5 |
| Vol 2 | 3.17/5 | 4.24/5 |
| Vol 3 | 3.03/5 | 4.19/5 |
| Vol 4 | 3.01/5 | 4.30/5 |
| Vol 5 | 3.07/5 | 4.11/5 |
| Vol 6 | 3.39/5 | 4.49/5 |
| Vol 7 | 3.08/5 | 4.26/5 |
| Vol 8 | 3.16/5 | 4.45/5 |
| Vol 9 | 3.03/5 | 4.34/5 |
| Vol 10 | 2.94/5 | 4.24/5 |
| Vol 11 | 2.86/5 | 4.11/5 |
| Vol 12 | 3.01/5 | 4.14/5 |
| Overall | 3.10/5 | 4.49/5 |