| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.24/5 | 4.21/5 |
| Vol 2 | 3.22/5 | 4.29/5 |
| Vol 3 | 3.65/5 | 4.51/5 |
| Vol 4 | 3.12/5 | 4.02/5 |
| Vol 5 | 3.56/5 | 4.44/5 |
| Vol 6 | 2.94/5 | 4.21/5 |
| Vol 7 | 3.71/5 | 4.50/5 |
| Vol 8 | 3.26/5 | 4.36/5 |
| Vol 9 | 3.58/5 | 4.48/5 |
| Vol 10 | 3.76/5 | 4.53/5 |
| Vol 11 | 3.93/5 | 4.58/5 |
| Vol 12 | 3.20/5 | 4.33/5 |
| Vol 13 | 3.06/5 | 4.24/5 |
| Overall | 3.43/5 | 4.58/5 |