| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.27/5 | 3.24/5 |
| Vol 2 | 2.39/5 | 3.38/5 |
| Vol 3 | 2.17/5 | 3.13/5 |
| Vol 4 | 2.18/5 | 3.14/5 |
| Vol 5 | 1.99/5 | 2.86/5 |
| Vol 6 | 2.34/5 | 3.37/5 |
| Vol 7 | 2.19/5 | 3.08/5 |
| Vol 8 | 2.33/5 | 3.43/5 |
| Vol 9 | 2.34/5 | 3.39/5 |
| Vol 10 | 2.47/5 | 3.43/5 |
| Vol 11 | 2.22/5 | 3.44/5 |
| Vol 12 | 2.12/5 | 3.15/5 |
| Overall | 2.25/5 | 3.44/5 |