| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.51/5 | 4.33/5 |
| Vol 2 | 3.51/5 | 4.23/5 |
| Vol 3 | 3.43/5 | 4.18/5 |
| Vol 4 | 3.74/5 | 4.50/5 |
| Vol 5 | 3.52/5 | 4.38/5 |
| Vol 6 | 3.61/5 | 4.41/5 |
| Vol 7 | 3.66/5 | 4.44/5 |
| Vol 8 | 3.30/5 | 4.01/5 |
| Vol 9 | 3.60/5 | 4.35/5 |
| Vol 10 | 3.68/5 | 4.45/5 |
| Vol 11 | 3.87/5 | 4.55/5 |
| Overall | 3.58/5 | 4.55/5 |