| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.16/5 | 4.24/5 |
| Vol 2 | 3.33/5 | 4.21/5 |
| Vol 3 | 3.20/5 | 4.17/5 |
| Vol 4 | 3.43/5 | 4.38/5 |
| Vol 5 | 3.15/5 | 4.22/5 |
| Vol 6 | 3.56/5 | 4.42/5 |
| Vol 7 | 3.72/5 | 4.49/5 |
| Vol 8 | 3.61/5 | 4.43/5 |
| Vol 9 | 3.40/5 | 4.37/5 |
| Vol 10 | 3.41/5 | 4.38/5 |
| Vol 11 | 3.65/5 | 4.50/5 |
| Vol 12 | 3.53/5 | 4.41/5 |
| Vol 13 | 3.58/5 | 4.40/5 |
| Vol 14 | 3.63/5 | 4.44/5 |
| Overall | 3.45/5 | 4.50/5 |