| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.78/5 | 4.33/5 |
| Vol 2 | 3.78/5 | 4.38/5 |
| Vol 3 | 3.28/5 | 4.37/5 |
| Vol 4 | 3.82/5 | 4.40/5 |
| Vol 5 | 3.97/5 | 4.46/5 |
| Vol 6 | 3.90/5 | 4.43/5 |
| Vol 7 | 4.00/5 | 4.47/5 |
| Vol 8 | 3.94/5 | 4.45/5 |
| Vol 9 | 3.94/5 | 4.44/5 |
| Vol 10 | 4.01/5 | 4.47/5 |
| Vol 11 | 4.05/5 | 4.49/5 |
| Vol 12 | 4.02/5 | 4.48/5 |
| Overall | 3.78/5 | 4.49/5 |