| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 1.95/5 | 3.19/5 |
| Vol 2 | 1.88/5 | 3.08/5 |
| Vol 3 | 1.84/5 | 2.96/5 |
| Vol 4 | 2.08/5 | 3.19/5 |
| Vol 5 | 2.05/5 | 3.33/5 |
| Vol 6 | 1.83/5 | 3.99/5 |
| Vol 7 | 2.02/5 | 3.97/5 |
| Vol 8 | 1.96/5 | 3.16/5 |
| Vol 9 | 1.99/5 | 3.60/5 |
| Vol 10 | 1.89/5 | 3.60/5 |
| Vol 11 | 1.97/5 | 3.16/5 |
| Vol 12 | 1.78/5 | 3.06/5 |
| Overall | 1.94/5 | 3.99/5 |