| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.62/5 | 4.50/5 |
| Vol 2 | 2.67/5 | 4.48/5 |
| Vol 3 | 2.54/5 | 4.30/5 |
| Vol 4 | 2.57/5 | 4.46/5 |
| Vol 5 | 2.68/5 | 4.27/5 |
| Vol 6 | 2.68/5 | 4.36/5 |
| Vol 7 | 2.39/5 | 4.30/5 |
| Vol 8 | 2.89/5 | 4.54/5 |
| Vol 9 | 2.78/5 | 4.46/5 |
| Vol 10 | 2.83/5 | 4.60/5 |
| Vol 11 | 2.81/5 | 4.68/5 |
| Vol 12 | 3.08/5 | 4.65/5 |
| Vol 13 | 2.97/5 | 4.66/5 |
| Overall | 2.75/5 | 4.68/5 |