| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.08/5 | 4.63/5 |
| Vol 2 | 3.12/5 | 4.63/5 |
| Vol 3 | 2.12/5 | 4.26/5 |
| Vol 4 | 2.12/5 | 4.21/5 |
| Vol 5 | 2.02/5 | 4.21/5 |
| Vol 6 | 2.48/5 | 4.29/5 |
| Vol 7 | 2.12/5 | 4.31/5 |
| Vol 8 | 2.35/5 | 4.42/5 |
| Vol 9 | 2.33/5 | 3.98/5 |
| Vol 10 | 2.08/5 | 4.26/5 |
| Vol 11 | 2.08/5 | 4.12/5 |
| Vol 12 | 1.82/5 | 4.18/5 |
| Overall | 2.37/5 | 4.63/5 |