| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.56/5 | 4.37/5 |
| Vol 2 | 3.57/5 | 4.49/5 |
| Vol 3 | 3.43/5 | 4.45/5 |
| Vol 4 | 3.43/5 | 4.40/5 |
| Vol 5 | 3.42/5 | 4.31/5 |
| Vol 6 | 3.41/5 | 4.30/5 |
| Vol 7 | 3.56/5 | 4.44/5 |
| Vol 8 | 3.38/5 | 4.43/5 |
| Vol 9 | 3.52/5 | 4.43/5 |
| Vol 10 | 3.46/5 | 4.40/5 |
| Vol 11 | 3.65/5 | 4.50/5 |
| Vol 12 | 3.50/5 | 4.40/5 |
| Vol 13 | 3.47/5 | 4.45/5 |
| Overall | 3.49/5 | 4.50/5 |