| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.26/5 | 4.10/5 |
| Vol 2 | 3.09/5 | 4.08/5 |
| Vol 3 | 3.25/5 | 4.21/5 |
| Vol 4 | 3.28/5 | 4.25/5 |
| Vol 5 | 3.19/5 | 4.22/5 |
| Vol 6 | 3.20/5 | 4.13/5 |
| Vol 7 | 3.33/5 | 3.97/5 |
| Vol 8 | 3.43/5 | 4.33/5 |
| Vol 9 | 3.45/5 | 4.27/5 |
| Vol 10 | 3.29/5 | 4.08/5 |
| Vol 11 | 3.35/5 | 4.29/5 |
| Vol 12 | 3.26/5 | 4.18/5 |
| Overall | 3.28/5 | 4.33/5 |