| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.21/5 | 4.31/5 |
| Vol 2 | 3.46/5 | 4.39/5 |
| Vol 3 | 3.60/5 | 4.48/5 |
| Vol 4 | 3.42/5 | 4.42/5 |
| Vol 5 | 3.23/5 | 4.41/5 |
| Vol 6 | 3.68/5 | 4.52/5 |
| Vol 7 | 3.44/5 | 4.43/5 |
| Vol 8 | 3.49/5 | 4.42/5 |
| Vol 9 | 3.46/5 | 4.42/5 |
| Vol 10 | 3.42/5 | 4.43/5 |
| Vol 11 | 3.43/5 | 4.40/5 |
| Vol 12 | 3.10/5 | 4.10/5 |
| Vol 13 | 3.34/5 | 4.22/5 |
| Overall | 3.38/5 | 4.52/5 |