| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.38/5 | 3.94/5 |
| Vol 2 | 2.76/5 | 4.43/5 |
| Vol 3 | 2.64/5 | 4.44/5 |
| Vol 4 | 2.63/5 | 4.47/5 |
| Vol 5 | 2.64/5 | 4.43/5 |
| Vol 6 | 2.84/5 | 4.39/5 |
| Vol 7 | 2.83/5 | 4.54/5 |
| Vol 8 | 3.12/5 | 4.66/5 |
| Vol 9 | 3.11/5 | 4.63/5 |
| Vol 10 | 3.21/5 | 4.65/5 |
| Vol 11 | 2.91/5 | 4.54/5 |
| Vol 12 | 3.14/5 | 4.62/5 |
| Vol 13 | 2.34/5 | 4.26/5 |
| Vol 14 | 2.26/5 | 3.68/5 |
| Vol 15 | 2.55/5 | 4.28/5 |
| Vol 16 | 2.74/5 | 4.49/5 |
| Overall | 2.77/5 | 4.66/5 |