| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.72/5 | 4.66/5 |
| Vol 2 | 2.88/5 | 4.60/5 |
| Vol 3 | 3.26/5 | 4.65/5 |
| Vol 4 | 2.52/5 | 4.35/5 |
| Vol 5 | 2.58/5 | 4.47/5 |
| Vol 6 | 3.05/5 | 4.68/5 |
| Vol 7 | 2.67/5 | 4.55/5 |
| Vol 8 | 2.93/5 | 4.58/5 |
| Vol 9 | 3.02/5 | 4.67/5 |
| Vol 10 | 2.83/5 | 4.64/5 |
| Vol 11 | 2.63/5 | 4.46/5 |
| Vol 12 | 2.75/5 | 4.58/5 |
| Vol 13 | 2.53/5 | 4.43/5 |
| Overall | 2.82/5 | 4.68/5 |