| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.20/5 | 4.06/5 |
| Vol 2 | 3.16/5 | 3.99/5 |
| Vol 3 | 3.41/5 | 4.08/5 |
| Vol 4 | 3.57/5 | 4.41/5 |
| Vol 5 | 3.40/5 | 4.24/5 |
| Vol 6 | 3.65/5 | 4.43/5 |
| Vol 7 | 3.41/5 | 4.22/5 |
| Vol 8 | 3.38/5 | 4.33/5 |
| Vol 9 | 3.43/5 | 4.31/5 |
| Vol 10 | 3.44/5 | 4.34/5 |
| Vol 11 | 3.43/5 | 4.17/5 |
| Vol 12 | 3.35/5 | 4.24/5 |
| Vol 13 | 3.16/5 | 4.22/5 |
| Vol 14 | 3.42/5 | 4.34/5 |
| Overall | 3.39/5 | 4.43/5 |