| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.24/5 | 4.32/5 |
| Vol 2 | 3.29/5 | 4.38/5 |
| Vol 3 | 3.03/5 | 4.30/5 |
| Vol 4 | 2.91/5 | 4.25/5 |
| Vol 5 | 3.18/5 | 4.29/5 |
| Vol 6 | 3.22/5 | 4.32/5 |
| Vol 7 | 3.23/5 | 4.33/5 |
| Vol 8 | 3.29/5 | 4.14/5 |
| Vol 9 | 3.14/5 | 4.23/5 |
| Vol 10 | 3.48/5 | 4.35/5 |
| Vol 11 | 3.14/5 | 4.33/5 |
| Vol 12 | 3.27/5 | 4.29/5 |
| Overall | 3.20/5 | 4.38/5 |