| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.24/5 | 4.16/5 |
| Vol 2 | 2.54/5 | 4.40/5 |
| Vol 3 | 2.91/5 | 4.49/5 |
| Vol 4 | 2.58/5 | 4.22/5 |
| Vol 5 | 2.80/5 | 4.42/5 |
| Vol 6 | 2.75/5 | 4.51/5 |
| Vol 7 | 2.75/5 | 4.52/5 |
| Vol 8 | 2.57/5 | 4.38/5 |
| Vol 9 | 2.53/5 | 4.38/5 |
| Vol 10 | 2.17/5 | 4.34/5 |
| Vol 11 | 2.42/5 | 4.32/5 |
| Vol 12 | 3.06/5 | 4.63/5 |
| Overall | 2.62/5 | 4.63/5 |