| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.44/5 | 4.09/5 |
| Vol 2 | 2.98/5 | 4.35/5 |
| Vol 3 | 2.76/5 | 4.18/5 |
| Vol 4 | 2.70/5 | 3.83/5 |
| Vol 5 | 2.95/5 | 4.41/5 |
| Vol 6 | 2.99/5 | 4.39/5 |
| Vol 7 | 2.69/5 | 4.33/5 |
| Vol 8 | 3.06/5 | 4.25/5 |
| Vol 9 | 2.76/5 | 4.36/5 |
| Vol 10 | 2.63/5 | 4.31/5 |
| Vol 11 | 2.65/5 | 4.33/5 |
| Overall | 2.80/5 | 4.41/5 |